C#•15mo ago

Instantiating a new object failed?

Hi, I have a very simple class called InvItem that takes three parameters: itemNo, description, and price. When I try to instantiate a new object using it, Visual Studio tells me that I haven't passed it any correpsonding arguments? I feel like the answer should be obvious but my brain just ain't doing the braining today. InvItem.cs

using System;

public class InvItem
{
    public int ItemNo { get; set; }
    public string Description { get; set; }
    public int Price { get; set; }

    public InvItem(int itemNo, string description, int price)
    {
        ItemNo = itemNo;
        Description = description;
        Price = price;
    }

    public string GetDisplayText()
    {
        return ItemNo.ToString() + "    " + Description + " ($" + Price.ToString() + ")";
    }
}

using System;

public class InvItem
{
    public int ItemNo { get; set; }
    public string Description { get; set; }
    public int Price { get; set; }

    public InvItem(int itemNo, string description, int price)
    {
        ItemNo = itemNo;
        Description = description;
        Price = price;
    }

    public string GetDisplayText()
    {
        return ItemNo.ToString() + "    " + Description + " ($" + Price.ToString() + ")";
    }
}

frmNewItem.cs

        // Create new inventory item
        InvItem invItem = null;

        // Take values from fields and instantiate a new inventory item object using those values
        public InvItem getInvItem()
        {
            int newItemNo = int.Parse(txtItemNo.Text);
            string newDescription = txtDescription.Text;
            int newPrice = int.Parse(txtPrice.Text);

            InvItem newInvItem = new InvItem(newItemNo, newDescription, newPrice);
            MessageBox.Show(newInvItem.GetDisplayText());
            return newInvItem;
}

        // Create new inventory item
        InvItem invItem = null;

        // Take values from fields and instantiate a new inventory item object using those values
        public InvItem getInvItem()
        {
            int newItemNo = int.Parse(txtItemNo.Text);
            string newDescription = txtDescription.Text;
            int newPrice = int.Parse(txtPrice.Text);

            InvItem newInvItem = new InvItem(newItemNo, newDescription, newPrice);
            MessageBox.Show(newInvItem.GetDisplayText());
            return newInvItem;
}

4 Replies

ParaLogia•15mo ago

The error you posted says that it's in "InvItemDB.cs". Can you post the code from that file?

u41cOP•15mo ago

yeah absolutely

u41cOP•15mo ago

https://pastebin.com/k533HUCx

Pastebin

InvItemDB.cs - Pastebin.com

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u41cOP•15mo ago

I just realised what I did wrong. I had price as int, not decimal.

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Instantiating a new object failed?