C#•6mo ago

Name does not exist in the current context

I need to access the Text inside a textBox but its name does not exist. the code is found in the text files

192 Replies

$details

MODiX•6mo ago

When you ask a question, make sure you include as much detail as possible. Such as code, the issue you are facing, what you expect the result to be, what .NET version you are using and what platform/environment (if any) are relevant to your question. Upload code here https://paste.mod.gg/ (see $code for more information on how to paste your code)

TheUnquietOP•6mo ago

xml.txt

leowest•6mo ago

x:Name but even better would be if u use bindings

TheUnquietOP•6mo ago

tried that and Name none of them worked

leowest•6mo ago

what is your code behind or viewmodel if u have one

TheUnquietOP•6mo ago

private void SluitButtonClick(object sender, RoutedEventArgs e)
        {
            bool aanleg, afhaal;
            if ((bool)AanlegRadioButton.IsChecked) aanleg = true; else aanleg = false;
            if ((bool)AfhaalRadioButton.IsChecked) afhaal = true; else afhaal = false;

            Offerte offerte = new(DateTime.Now, int.Parse(KlantIdTextBlock.Text), afhaal, aanleg, GeselecteerdeProducten.Count);
            tuincentrumManager.UploadOfferte(offerte);

            foreach (Product p in GeselecteerdeProducten)
            {
                tuincentrumManager.UploadBestelling(new Bestelling(offerte.Id.Value, p.Id.Value, AantalTextBox.Text));
            }

            Close();
        }

private void SluitButtonClick(object sender, RoutedEventArgs e)
        {
            bool aanleg, afhaal;
            if ((bool)AanlegRadioButton.IsChecked) aanleg = true; else aanleg = false;
            if ((bool)AfhaalRadioButton.IsChecked) afhaal = true; else afhaal = false;

            Offerte offerte = new(DateTime.Now, int.Parse(KlantIdTextBlock.Text), afhaal, aanleg, GeselecteerdeProducten.Count);
            tuincentrumManager.UploadOfferte(offerte);

            foreach (Product p in GeselecteerdeProducten)
            {
                tuincentrumManager.UploadBestelling(new Bestelling(offerte.Id.Value, p.Id.Value, AantalTextBox.Text));
            }

            Close();
        }

leowest•6mo ago

and which one it doesnt find

TheUnquietOP•6mo ago

its this line: tuincentrumManager.UploadBestelling(new Bestelling(offerte.Id.Value, p.Id.Value, AantalTextBox.Text));

leowest•6mo ago

AantalTextBox ?

TheUnquietOP•6mo ago

yes I gave it x:Name="AantalTextBox" but the error still presists

leowest•6mo ago

it doesnt exist in your xaml

TheUnquietOP•6mo ago

is there a way to Bind it to Bestelling? I added it <TextBox Width="50" Margin="5" x:Name="AantalTextBox"/> this is the line I added

leowest•6mo ago

what is Bestelling sorry I dont se it on xaml that looks fine

TheUnquietOP•6mo ago

this is the model using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace BL.Models { public class Bestelling { public int Offerte_Id; public int Product_Id; public int Aantal_Product; public Bestelling(int offerte_Id, int product_Id, int aantal_Product) { Offerte_Id = offerte_Id; Product_Id = product_Id; Aantal_Product = aantal_Product; } } }

leowest•6mo ago

well u cannot bind fields to XAML u need properties are u using mvvm or only code behind? just trying to understand code behind is when u use xaml.cs for everything

TheUnquietOP•6mo ago

nope

leowest•6mo ago

ok so xaml.cs

TheUnquietOP•6mo ago

yes

leowest•6mo ago

this should work if u build does it work? as it does it says succeed in the build if it does vs might be drunk

TheUnquietOP•6mo ago

I tried Rebuilding

leowest•6mo ago

also your xaml does not have a lot of the things u are showing me SluitButtonClick is not in any button

TheUnquietOP•6mo ago

Yeah it was SluitButtonClick I changed to OpslaanEnSluitButtonClick

leowest•6mo ago

ah ok that one I see I mean then your textbox should work

TheUnquietOP•6mo ago

after building the error is still there

leowest•6mo ago

but in the output window what does it say

TheUnquietOP•6mo ago

ill show you

TheUnquietOP•6mo ago

leowest•6mo ago

in the output window if it says that

leowest•6mo ago

TheUnquietOP•6mo ago

leowest•6mo ago

ok check what file it complains about it should say on the right side

TheUnquietOP•6mo ago

Tuincentrum_UI_x02civxy_wpftmp.csproj im not sure what file this is

TheUnquietOP•6mo ago

I found these

leowest•6mo ago

it would be like that u see mine says MainWindow.xaml.cs

TheUnquietOP•6mo ago

yes the code behind I sent is for that fike file*

leowest•6mo ago

ok so can u send me the code again updated with exactly what u have now xaml and xaml.cs $paste

MODiX•6mo ago

If your code is too long, you can post to https://paste.mod.gg/ and copy the link into chat for others to see your shared code!

leowest•6mo ago

if possible use this site its better then discord to read

TheUnquietOP•6mo ago

I will

TheUnquietOP•6mo ago

https://paste.mod.gg/gdrlxvzpcihi/0

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leowest•6mo ago

ok moment

TheUnquietOP•6mo ago

thank you

leowest•6mo ago

its missing the xaml.cs file ah I see because the textbox is inside a datatemplate that wont work

TheUnquietOP•6mo ago

I had a feeling can you help me get to the TextBox?

leowest•6mo ago

what u should do is using an ObservableCollection and binding

TheUnquietOP•6mo ago

yeah I got the collection

TheUnquietOP•6mo ago

here is the cs file i'm very sorry for not sending it before https://paste.mod.gg/hfxmutjbldzo/0

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leowest•6mo ago

public class Bestelling
{
    public int Offerte_Id {get;set;}
    public int Product_Id {get;set;}
    public int Aantal_Product {get;set;}

    public Bestelling(int offerte_Id, int product_Id, int aantal_Product)
    {
        Offerte_Id = offerte_Id;
        Product_Id = product_Id;
        Aantal_Product = aantal_Product;
    }
}

public class Bestelling
{
    public int Offerte_Id {get;set;}
    public int Product_Id {get;set;}
    public int Aantal_Product {get;set;}

    public Bestelling(int offerte_Id, int product_Id, int aantal_Product)
    {
        Offerte_Id = offerte_Id;
        Product_Id = product_Id;
        Aantal_Product = aantal_Product;
    }
}

and then in your xaml.cs

public ObservableCollection<Bestelling> Products {get;set;}

public ObservableCollection<Bestelling> Products {get;set;}

and then your listbox

TheUnquietOP•6mo ago

okay

leowest•6mo ago

ItemsSource="{Binding Products}"

ItemsSource="{Binding Products}"

what is ProductNaarString

TheUnquietOP•6mo ago

I don't understand using BL.Exceptions; using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace BL.Models { public class Product { public int? Id; public string ProductNaarString => ToString(); private string naam_nl; public string Naam_nl { get { return naam_nl; } set { if (string.IsNullOrWhiteSpace(value)) throw new TuincentrumException("Naam nl is leeg"); naam_nl = value; } } private string naam_w; public string Naam_W {
get { return naam_w; } set { if (string.IsNullOrWhiteSpace(value)) throw new TuincentrumException("Naam w is leeg"); naam_nl = value; } } public double Prijs; public string Beschrijving; public Product(int id, string naam_nl, string naam_W, double prijs, string beschrijving) { Id = id; Naam_nl = naam_nl; Naam_W = naam_W; Prijs = prijs; Beschrijving = beschrijving; } public Product(string naam_nl, string naam_W, double prijs, string beschrijving) { Naam_nl = naam_nl; Naam_W = naam_W; Prijs = prijs; Beschrijving = beschrijving; } public override string ToString() { return $"{Naam_nl} {Naam_W} {Beschrijving} €{Math.Round(Prijs, 2)}"; } } }

leowest•6mo ago

TheUnquietOP•6mo ago

could you take a look at the xaml.cs file? I got a link https://paste.mod.gg/hfxmutjbldzo/0

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leowest•6mo ago

I will now but what is ProductNaarString

TheUnquietOP•6mo ago

its a property I made to hold the ToString method I had a previous problem with the binding I set on the textBlock

leowest•6mo ago

ah ok Ah wow I see there is a lot of issues because you're mixing binding with code behind and no datacontext

TheUnquietOP•6mo ago

oh, could you help make the code a little better?

leowest•6mo ago

ok let me think for a moment what is easiest to explain

TheUnquietOP•6mo ago

thank you very much

leowest•6mo ago

u dont edit items in the listbox do u?

TheUnquietOP•6mo ago

you can edit the TextBox

leowest•6mo ago

ok what would be the aantal_product in Product?

TheUnquietOP•6mo ago

you mean in Bestelling?

leowest•6mo ago

you're not using bestelling as far as I can see in Product

TheUnquietOP•6mo ago

so I've got products in a collection then im making a Bestelling object for each of those Product objects Bestelling has a property Aantal_product which should have the value of whatever the user has entered in the textbox

leowest•6mo ago

??translate en bestelling ah mm bot doesnt work in threads what bestelling means

TheUnquietOP•6mo ago

'Order_product' this is the object in between Order and Product

leowest•6mo ago

ok so list A is all products list B is the shopping cart?

TheUnquietOP•6mo ago

yes

leowest•6mo ago

ok I will worry about that latter first I will show u how to do this then we work our way for bestelling which might need to change things ok, so what u want to do is: To your xaml change these 2 like these:

        <ListBox ItemsSource="{Binding AlleProducten}" Grid.Row="2" Grid.Column="0" Margin="5" Grid.ColumnSpan="2" SelectionMode="Extended"/>
        <ListBox ItemsSource="{Binding GeselecteerdeProducten}" Grid.Row="2" Grid.Column="2" Margin="5" Grid.ColumnSpan="2" SelectionMode="Extended">
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <StackPanel Orientation="Vertical" Margin="5">
                        <TextBlock Text="{Binding ProductNaarString}"/>
                    </StackPanel>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>

        <ListBox ItemsSource="{Binding AlleProducten}" Grid.Row="2" Grid.Column="0" Margin="5" Grid.ColumnSpan="2" SelectionMode="Extended"/>
        <ListBox ItemsSource="{Binding GeselecteerdeProducten}" Grid.Row="2" Grid.Column="2" Margin="5" Grid.ColumnSpan="2" SelectionMode="Extended">
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <StackPanel Orientation="Vertical" Margin="5">
                        <TextBlock Text="{Binding ProductNaarString}"/>
                    </StackPanel>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>

Then in your xaml.cs u want to do this, change these 2 lines from

private ObservableCollection<Product> AlleProducten;
private ObservableCollection<Product> GeselecteerdeProducten;

private ObservableCollection<Product> AlleProducten;
private ObservableCollection<Product> GeselecteerdeProducten;

public ObservableCollection<Product> AlleProducten {get;set;}
public ObservableCollection<Product> GeselecteerdeProducten {get;set;}

public ObservableCollection<Product> AlleProducten {get;set;}
public ObservableCollection<Product> GeselecteerdeProducten {get;set;}

Then change this from:

public NieuweOfferteWindow(Klant k)
{
    InitializeComponent();
    tuincentrumRepository = new TuincentrumRepository(ConfigurationManager.ConnectionStrings["TuincentrumDBConnectionLaptop"].ToString());
    tuincentrumManager = new TuincentrumManager(tuincentrumRepository);

    DatumTextBlock.Text = DateTime.Now.ToString("dd/MM/yyyy");
    KlantIdTextBlock.Text = k.Id.ToString();
    KlantNaamTextBlock.Text = k.Naam;
    KlantAdresTextBlock.Text = k.Adres;
    
    AlleProducten = new ObservableCollection<Product>(tuincentrumManager.GeefProducten());
    AlleProductenListBox.ItemsSource = AlleProducten;

    GeselecteerdeProducten = new ObservableCollection<Product>();
    GeselecteerdeProductenListBox.ItemsSource = GeselecteerdeProducten;
    Klant = k;
}

public NieuweOfferteWindow(Klant k)
{
    InitializeComponent();
    tuincentrumRepository = new TuincentrumRepository(ConfigurationManager.ConnectionStrings["TuincentrumDBConnectionLaptop"].ToString());
    tuincentrumManager = new TuincentrumManager(tuincentrumRepository);

    DatumTextBlock.Text = DateTime.Now.ToString("dd/MM/yyyy");
    KlantIdTextBlock.Text = k.Id.ToString();
    KlantNaamTextBlock.Text = k.Naam;
    KlantAdresTextBlock.Text = k.Adres;
    
    AlleProducten = new ObservableCollection<Product>(tuincentrumManager.GeefProducten());
    AlleProductenListBox.ItemsSource = AlleProducten;

    GeselecteerdeProducten = new ObservableCollection<Product>();
    GeselecteerdeProductenListBox.ItemsSource = GeselecteerdeProducten;
    Klant = k;
}

public NieuweOfferteWindow(Klant k)
{
    InitializeComponent();
    DataContext = this;

    tuincentrumRepository = new TuincentrumRepository(ConfigurationManager.ConnectionStrings["TuincentrumDBConnectionLaptop"].ToString());
    tuincentrumManager = new TuincentrumManager(tuincentrumRepository);

    DatumTextBlock.Text = DateTime.Now.ToString("dd/MM/yyyy");
    KlantIdTextBlock.Text = k.Id.ToString();
    KlantNaamTextBlock.Text = k.Naam;
    KlantAdresTextBlock.Text = k.Adres;
    
    AlleProducten = new ObservableCollection<Product>(tuincentrumManager.GeefProducten());

    GeselecteerdeProducten = new ObservableCollection<Product>();
    Klant = k;
}

public NieuweOfferteWindow(Klant k)
{
    InitializeComponent();
    DataContext = this;

    tuincentrumRepository = new TuincentrumRepository(ConfigurationManager.ConnectionStrings["TuincentrumDBConnectionLaptop"].ToString());
    tuincentrumManager = new TuincentrumManager(tuincentrumRepository);

    DatumTextBlock.Text = DateTime.Now.ToString("dd/MM/yyyy");
    KlantIdTextBlock.Text = k.Id.ToString();
    KlantNaamTextBlock.Text = k.Naam;
    KlantAdresTextBlock.Text = k.Adres;
    
    AlleProducten = new ObservableCollection<Product>(tuincentrumManager.GeefProducten());

    GeselecteerdeProducten = new ObservableCollection<Product>();
    Klant = k;
}

By doing this we are not actually making use of the DataContext and bindings in xaml

TheUnquietOP•6mo ago

one moment please

TheUnquietOP•6mo ago

I'm getting this error in my .xaml file

leowest•6mo ago

try reloading the designer never seen that error before

TheUnquietOP•6mo ago

yup still there ill reload vscode

leowest•6mo ago

ah vscode :OOF: I would not be able to help u with vscode I dont use it for c#

TheUnquietOP•6mo ago

reloading the app worked no i meant Visual studio im using vs sorry forget sometimes

leowest•6mo ago

visual studio community ok

TheUnquietOP•6mo ago

yes

leowest•6mo ago

yeah I have 0 idea about vscode issues 😛

TheUnquietOP•6mo ago

i have enterprise too, if that one is better

leowest•6mo ago

either should work anyway does it build now?

TheUnquietOP•6mo ago

vscode isnt good for compiling

leowest•6mo ago

ah right I forgot change this too

TheUnquietOP•6mo ago

now I'm having issues with my other functions

        private void VerwijderProductenButtonClick(object sender, RoutedEventArgs e)
        {
            List<Product> producten = new List<Product>();
            foreach (Product p in GeselecteerdeProductenListBox.SelectedItems) producten.Add(p);
            foreach (Product p in producten)
            {
                GeselecteerdeProducten.Remove(p);
                AlleProducten.Add(p);
            }
        }

        private void VerwijderProductenButtonClick(object sender, RoutedEventArgs e)
        {
            List<Product> producten = new List<Product>();
            foreach (Product p in GeselecteerdeProductenListBox.SelectedItems) producten.Add(p);
            foreach (Product p in producten)
            {
                GeselecteerdeProducten.Remove(p);
                AlleProducten.Add(p);
            }
        }

The listbox doesnt exist anymore so I cant put any products in

leowest•6mo ago

foreach (Product p in GeselecteerdeProducten)
            {
                tuincentrumManager.UploadBestelling(new Bestelling(offerte.Id.Value, p.Id.Value, AantalTextBox.Text));
            }

foreach (Product p in GeselecteerdeProducten)
            {
                tuincentrumManager.UploadBestelling(new Bestelling(offerte.Id.Value, p.Id.Value, AantalTextBox.Text));
            }

u would change AantalTextBox.Text to either Naam_nl or u would need ot make

public string ProductNaarString => ToString();

public string ProductNaarString => ToString();

A get;set; to use that

TheUnquietOP•6mo ago

I need the textbox so the user can put the amount of the product

leowest•6mo ago

oh so its mean to be a quantity ok now it makes mose sense

TheUnquietOP•6mo ago

sorry I forgot to explain thank you for your patience

leowest•6mo ago

then its best if u have a property in Product that says quantity int then u can bind it

TheUnquietOP•6mo ago

Bestelling has that property, should I use Bestelling instead of Product?

leowest•6mo ago

yes it would be better so u just set it to 1 by default and user can modify it on the 2nd listbox

TheUnquietOP•6mo ago

okay

leowest•6mo ago

and add the x:Name="AlleProductenListBox" back to your lists so u can use them from the button that should be all I guess u can change the

                <DataTemplate>
                    <StackPanel Orientation="Vertical" Margin="5">
                        <TextBlock Text="{Binding ProductNaarString}"/>
                        <StackPanel Orientation="Horizontal">
                            <TextBlock Text="Aantal:" Margin="5"/>
                            <TextBox Width="50" Margin="5" x:Name="AantalTextBox"/>
                        </StackPanel>
                    </StackPanel>
                </DataTemplate>

                <DataTemplate>
                    <StackPanel Orientation="Vertical" Margin="5">
                        <TextBlock Text="{Binding ProductNaarString}"/>
                        <StackPanel Orientation="Horizontal">
                            <TextBlock Text="Aantal:" Margin="5"/>
                            <TextBox Width="50" Margin="5" x:Name="AantalTextBox"/>
                        </StackPanel>
                    </StackPanel>
                </DataTemplate>

                <DataTemplate>
                    <StackPanel Orientation="Vertical" Margin="5">
                        <TextBlock Text="{Binding ProductNaarString}"/>
                        <StackPanel Orientation="Horizontal">
                            <TextBlock Text="Aantal:" Margin="5"/>
                            <TextBox Text="{Binding Quantity}" Width="50" Margin="5" />
                        </StackPanel>
                    </StackPanel>
                </DataTemplate>

                <DataTemplate>
                    <StackPanel Orientation="Vertical" Margin="5">
                        <TextBlock Text="{Binding ProductNaarString}"/>
                        <StackPanel Orientation="Horizontal">
                            <TextBlock Text="Aantal:" Margin="5"/>
                            <TextBox Text="{Binding Quantity}" Width="50" Margin="5" />
                        </StackPanel>
                    </StackPanel>
                </DataTemplate>

and it should reflect the changes in your ObservableCollection so it will update Quantity

TheUnquietOP•6mo ago

got it I also added this back : AlleProductenListBox.ItemsSource = AlleProducten;

leowest•6mo ago

and then u would need to add the name to your bestelling no need if u have it the way I gave u earlier setting it from xaml is better for visibility

TheUnquietOP•6mo ago

The Binding takes care of it?

leowest•6mo ago

yes

TheUnquietOP•6mo ago

cool

leowest•6mo ago

let me know if it works of if u have issues still

TheUnquietOP•6mo ago

yeah I have a question so to access the quantity what's the syntax?

leowest•6mo ago

so u would have say

public ObservableCollection<Bestelling> GeselecteerdeProducten {get;set;}

public ObservableCollection<Bestelling> GeselecteerdeProducten {get;set;}

And if u loop

foreach (var item in GeselecteerdeProducten)
{
    //item.Quantity
}

foreach (var item in GeselecteerdeProducten)
{
    //item.Quantity
}

GeselecteerdeProducten is the 2nd listbox right?

TheUnquietOP•6mo ago

yes to transfer the products from the first listbox to the second I cant just remove and add them right? Since the types are Product and Bestelling instead of Product and Product

leowest•6mo ago

U can remove if u want, u would just have to keep track of the items to add back

TheUnquietOP•6mo ago

this is the method that adds the products from the first list to the other

        private void VoegProductButtonClick(object sender, RoutedEventArgs e)
        {
            List<Product> producten = new List<Product>();
            foreach (Product p in AlleProductenListBox.SelectedItems) producten.Add(p);
            foreach (Product p in producten)
            {
                GeselecteerdeProducten.Add(p);
                AlleProducten.Remove(p);
            }
        }

        private void VoegProductButtonClick(object sender, RoutedEventArgs e)
        {
            List<Product> producten = new List<Product>();
            foreach (Product p in AlleProductenListBox.SelectedItems) producten.Add(p);
            foreach (Product p in producten)
            {
                GeselecteerdeProducten.Add(p);
                AlleProducten.Remove(p);
            }
        }

leowest•6mo ago

You could keep a list of like: private List<Product> removedProducts = new List<Product>(); if u want to remove and add items back and just use the item Id to compare from bestelling to product

TheUnquietOP•6mo ago

should I just rewrite the working of everything? or is it better to get rid of the textbox and have users just add as many using the button instead?

leowest•6mo ago

the textbox is fine

TheUnquietOP•6mo ago

then I can just count the amount of times the product appears in the list

leowest•6mo ago

u can even make it a numeric up down box visually having the quantity on the cart is better

TheUnquietOP•6mo ago

I understand

leowest•6mo ago

I just dont see any need to remove the product from the list of products if the user add the same product just check the id if it exists in the list of cart

TheUnquietOP•6mo ago

this makes things way to complicated

leowest•6mo ago

just add+ 1 instead of adding a new item

TheUnquietOP•6mo ago

I thought it would be best so that users cant add the same one again so I'll check if the selected item is already in the second list and if it is i'll add + to the textbox?

leowest•6mo ago

that is one way, u dont add to the box u add to the item item.Quantity += 1;

TheUnquietOP•6mo ago

right one more thing

leowest•6mo ago

but you can remove items if u prefer u would just have an extra list keeping the items removed so u can add it back later it would not be complicated its just 1 extra check

TheUnquietOP•6mo ago

whenever I transfer one product to the other listbox the product shows up in the listbox how can i achieve this now that I'm using Bestelling as a type instead of Product remove from AlleProducten?

leowest•6mo ago

yeah

private List<Product> removedProducts = new List<Product>();
private void VerwijderProductenButtonClick(object sender, RoutedEventArgs e)
{
    var cart = new List<Bestelling>();
    foreach (var c in GeselecteerdeProductenListBox.SelectedItems) cart.Add(p);
    foreach (var c in cart)
    {
        var p = removedProducts.FirstOrDefault(x => x.Id == c.Id);
        GeselecteerdeProducten.Remove(c);
        AlleProducten.Add(p);
        removedProducts.Remove(p);
    }
}

private List<Product> removedProducts = new List<Product>();
private void VerwijderProductenButtonClick(object sender, RoutedEventArgs e)
{
    var cart = new List<Bestelling>();
    foreach (var c in GeselecteerdeProductenListBox.SelectedItems) cart.Add(p);
    foreach (var c in cart)
    {
        var p = removedProducts.FirstOrDefault(x => x.Id == c.Id);
        GeselecteerdeProducten.Remove(c);
        AlleProducten.Add(p);
        removedProducts.Remove(p);
    }
}

something like this to add product back to product u check product id from bestelling against the product id on product

TheUnquietOP•6mo ago

right, how do I show the Product in the ListBox (the second listBox)?

leowest•6mo ago

when u add item to GeselecteerdeProducten it auto updates the list

TheUnquietOP•6mo ago

ill run it

leowest•6mo ago

is it not showing?

TheUnquietOP•6mo ago

leowest•6mo ago

u change this right

TheUnquietOP•6mo ago

yeah cause the type right now is Bestelling

leowest•6mo ago

can u show me your current code on xaml and xmal.cs

TheUnquietOP•6mo ago

yes this one is throwing errors

TheUnquietOP•6mo ago

leowest•6mo ago

yes I need to see the code to see the changes u did

TheUnquietOP•6mo ago

https://paste.mod.gg/sycdjoacwtbv/0 the code behind

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leowest•6mo ago

u did not change things like how I told u :/

leowest•6mo ago

TheUnquietOP•6mo ago

oh didnt see that

leowest•6mo ago

that is why it was not showing also line 50 no need FirstOrDefault(x => x.Id == c.Id); this was an example u have to change Id to the actual Id names in bestelling and product

TheUnquietOP•6mo ago

yup I have a question what's p?

leowest•6mo ago

Product

TheUnquietOP•6mo ago

this line is throwing an error: foreach (var c in GeselecteerdeProductenListBox.SelectedItems) cart.Add(p); p does not exist in the current context

leowest•6mo ago

ah my bad that one I forgot to change to c that line cart.Add(c);

TheUnquietOP•6mo ago

so all the products are already in the second listbox it should be that a user can add one and then remove one

leowest•6mo ago

it should not because you're initializing it to empty how are u adding items to it, its not in the code u sent me

TheUnquietOP•6mo ago

this is the method that adds items

private void VoegProductButtonClick(object sender, RoutedEventArgs e)
{
    var cart = new List<Bestelling>();
    foreach (Bestelling c in GeselecteerdeProductenListBox.SelectedItems) cart.Add(c);
    foreach (var c in cart)
    {
        var p = removedProducts.FirstOrDefault(x => x.Id == c.Product_Id);
        GeselecteerdeProducten.Remove(c);
        AlleProducten.Add(p);
        removedProducts.Remove(p);
    }
}

private void VoegProductButtonClick(object sender, RoutedEventArgs e)
{
    var cart = new List<Bestelling>();
    foreach (Bestelling c in GeselecteerdeProductenListBox.SelectedItems) cart.Add(c);
    foreach (var c in cart)
    {
        var p = removedProducts.FirstOrDefault(x => x.Id == c.Product_Id);
        GeselecteerdeProducten.Remove(c);
        AlleProducten.Add(p);
        removedProducts.Remove(p);
    }
}

leowest•6mo ago

no that is to remove

TheUnquietOP•6mo ago

leowest•6mo ago

there is no code to add items to GeselecteerdeProducten so how is it filled

TheUnquietOP•6mo ago

the listbox is full without me adding any products i have no clue

leowest•6mo ago

what is your xaml u didnt send me

TheUnquietOP•6mo ago

https://paste.mod.gg/hqquteseflpq/0

BlazeBin - hqquteseflpq

A tool for sharing your source code with the world!

leowest•6mo ago

well u have no code filling the 2nd list

TheUnquietOP•6mo ago

hey its good now 💀 I just ran the app again so to recap to add a product I should?

leowest•6mo ago

do the inverse of how u remove items add item to removedProducts add bestelling to cart list and remove item from products list

TheUnquietOP•6mo ago

i'm so confused what's the purpose of the removedProducts List?

leowest•6mo ago

it keeps the items u have removed from products so u can add it back when u remove them from cart because cart is a different type Bestelling != Product

TheUnquietOP•6mo ago

yes

leowest•6mo ago

u keep a list that intermediate both which is the removedProducts

TheUnquietOP•6mo ago

okay, but that list is Product too?

leowest•6mo ago

yes

leowest•6mo ago

TheUnquietOP•6mo ago

im still a little confused

leowest•6mo ago

about what its the same thing u were doing before except u have a separated list to store the removed products that is not visible to the xaml u add item to bestelling u add item to removedProducts u remove item from Products

TheUnquietOP•6mo ago

right, I'm confused about how i'll show the products in the secod listbox

leowest•6mo ago

by adding the bestelling to GeselecteerdeProducten? similar to how u do in your button OpslaanEnSluitenButtonClick

TheUnquietOP•6mo ago

yeah that makes sene snese sense but, I need to show product names

leowest•6mo ago

and it will

<StackPanel Orientation="Vertical" Margin="5">
    <TextBlock Text="{Binding ProductNaarString}"/>
    <TextBlock Text="Aantal"/>
    <TextBox Text="{Binding Aantal_Product}" Width="50" Margin="5"/>
</StackPanel>

<StackPanel Orientation="Vertical" Margin="5">
    <TextBlock Text="{Binding ProductNaarString}"/>
    <TextBlock Text="Aantal"/>
    <TextBox Text="{Binding Aantal_Product}" Width="50" Margin="5"/>
</StackPanel>

if Aantal_Product is quantity and ProductNaarString is the product name in Bestelling it will work just fine if its not u need to add a name property to bestelling or a refence to Product so u can do say

TheUnquietOP•6mo ago

even tho ProductNaarString is from the Product class?

leowest•6mo ago

public Product ProductInfo {get;set;} so u can use ProductInfo.ProductNaarString whichever u think its best it can be as simple as

public class Bestelling
{
    public int Offerte_Id {get;set;}
    public int Product_Id {get;set;}
    public int Aantal_Product {get;set;}
    public string DisplayName {get;set;}

    public Bestelling(int offerte_Id, int product_Id, int aantal_Product, string displayName)
    {
        Offerte_Id = offerte_Id;
        Product_Id = product_Id;
        Aantal_Product = aantal_Product;
        DisplayName = displayName
    }
}

public class Bestelling
{
    public int Offerte_Id {get;set;}
    public int Product_Id {get;set;}
    public int Aantal_Product {get;set;}
    public string DisplayName {get;set;}

    public Bestelling(int offerte_Id, int product_Id, int aantal_Product, string displayName)
    {
        Offerte_Id = offerte_Id;
        Product_Id = product_Id;
        Aantal_Product = aantal_Product;
        DisplayName = displayName
    }
}

TheUnquietOP•6mo ago

is there really no other way than everything we're doing?

leowest•6mo ago

and u change ProductNaarString to DisplayName u could add quantity to product and keep everything as it was before if u want

TheUnquietOP•6mo ago

then there is no use in having the Bestelling class

leowest•6mo ago

but doesn't sound like a Product responsibility to hold the quantity the user is buying

TheUnquietOP•6mo ago

yeah

leowest•6mo ago

the problem here is how you are handling things normally you have Product and u have Cart Cart will usually have some references of Product

TheUnquietOP•6mo ago

should I make a nother class?

leowest•6mo ago

i.e.:

public class Cart
{
    public int Id {get;set;}
    public int ProductId {get;set;}
    public Product Product {get;set;}
    public int Quantity {get;set;}
}

public class Cart
{
    public int Id {get;set;}
    public int ProductId {get;set;}
    public Product Product {get;set;}
    public int Quantity {get;set;}
}

TheUnquietOP•6mo ago

I can check the product by its id using a method that asks the db is that better in your opinion?

leowest•6mo ago

I dont think that is relevant here since u already have a list with all products but having a reference of Product in your cart

TheUnquietOP•6mo ago

cant it help with showing the name?

leowest•6mo ago

allows the flexibity of u being able to use its name etc so u could do say Product.Name in the binding as an example now it depends if you're using those models for something else i.e.: are u using EFCore? if u are then it becomes a bit more complex

TheUnquietOP•6mo ago

nope ADO

leowest•6mo ago

Ado? ok then yes that is fine

TheUnquietOP•6mo ago

alright

leowest•6mo ago

in this case here all u would do is

<StackPanel Orientation="Vertical" Margin="5">
    <TextBlock Text="{Binding Product.ProductNaarString}"/>
    <TextBlock Text="Aantal"/>
    <TextBox Text="{Binding Quantity}" Width="50" Margin="5"/>
</StackPanel>

<StackPanel Orientation="Vertical" Margin="5">
    <TextBlock Text="{Binding Product.ProductNaarString}"/>
    <TextBlock Text="Aantal"/>
    <TextBox Text="{Binding Quantity}" Width="50" Margin="5"/>
</StackPanel>

TheUnquietOP•6mo ago

I got a question, what's the difference between Product.ProductNaarString and ProductNaarString?

leowest•6mo ago

because the 2nd list is Cart so we are accessing the Product reference in the Cart item

TheUnquietOP•6mo ago

so to add I should?

leowest•6mo ago

👆

TheUnquietOP•6mo ago

alright, I'll figure the rest out on my own thank you for all the help

leowest•6mo ago

public record Product(int Id, string Name, decimal Price);
public record Cart(int Id, Product Product, int Quantity);

public record Product(int Id, string Name, decimal Price);
public record Cart(int Id, Product Product, int Quantity);

and

        public ObservableCollection<Product> Products { get; set; }
        public ObservableCollection<Cart> Cart { get; set; }
        private List<Product> removedProducts = new List<Product>();

        public Window1()
        {
            Products = new ObservableCollection<Product>
            {
                new Product(1, "Boots", 120),
                new Product(1, "Pants", 90),
                new Product(1, "Shirt", 81),
                new Product(1, "Gloves", 22),
                new Product(1, "Hat", 12),
            };

            Cart = new ObservableCollection<Cart>();
            InitializeComponent();
            DataContext = this;
        }

        private void AddAll(object sender, RoutedEventArgs e)
        {
            var products = new List<Product>();
            foreach (Product p in ProductBox.SelectedItems) products.Add(p);
            foreach (Product p in products)
            {
                Cart.Add(new Cart(1, p, 0));
                removedProducts.Add(p);
                Products.Remove(p);
            }
        }

        private void RemoveAll(object sender, RoutedEventArgs e)
        {
            var cart = new List<Cart>();
            foreach (Cart c in CartBox.SelectedItems) cart.Add(c);
            foreach (var c in cart)
            {
                var p = removedProducts.FirstOrDefault(x => x.Id == c.Product.Id);
                Cart.Remove(c);
                Products.Add(p);
                removedProducts.Remove(p);
            }
        }
    }

        public ObservableCollection<Product> Products { get; set; }
        public ObservableCollection<Cart> Cart { get; set; }
        private List<Product> removedProducts = new List<Product>();

        public Window1()
        {
            Products = new ObservableCollection<Product>
            {
                new Product(1, "Boots", 120),
                new Product(1, "Pants", 90),
                new Product(1, "Shirt", 81),
                new Product(1, "Gloves", 22),
                new Product(1, "Hat", 12),
            };

            Cart = new ObservableCollection<Cart>();
            InitializeComponent();
            DataContext = this;
        }

        private void AddAll(object sender, RoutedEventArgs e)
        {
            var products = new List<Product>();
            foreach (Product p in ProductBox.SelectedItems) products.Add(p);
            foreach (Product p in products)
            {
                Cart.Add(new Cart(1, p, 0));
                removedProducts.Add(p);
                Products.Remove(p);
            }
        }

        private void RemoveAll(object sender, RoutedEventArgs e)
        {
            var cart = new List<Cart>();
            foreach (Cart c in CartBox.SelectedItems) cart.Add(c);
            foreach (var c in cart)
            {
                var p = removedProducts.FirstOrDefault(x => x.Id == c.Product.Id);
                Cart.Remove(c);
                Products.Add(p);
                removedProducts.Remove(p);
            }
        }
    }

this is just a basic example ofc your data comes from the database etc anyway I got to go for now

Gaming

Programming

Name does not exist in the current context