Gijs Posts - Answer Overflow

Gijs

•Created by Gijs on 10/3/2023 in #help

❔ winforms storage system (beginner)

I'm new to winforms and for school I have to make a storage system. I'm completly done the only thing that doesn't work is the selling of shoes, I have no idea how to implement this. I use a datagridview to show the storage, the person selling has a textbox and a button where they can first put the number in the textbox and then click the button to remove x amount of shoes this is my code:

Public mwVoorraad()
        {

            InitializeComponent();
            FillDataGrid();
           
        }
        public void FillDataGrid()
        {
            dt.Rows.Clear();
            dt.Columns.Clear();
            dt.Columns.Add("Merk");
            dt.Columns.Add("Type");
            dt.Columns.Add("Maat");
            dt.Columns.Add("Kleur");
            dt.Columns.Add("Prijs");
            dt.Columns.Add("Aantal");

            foreach (string[] schoen in voorraad.schoenenvoorraad)
            {
                dt.Rows.Add(schoen);
            }
            dgvAdmin.DataSource = dt;
        }

        private void btVerkoop_Click(object sender, EventArgs e)
        {
           
        }

        private void btBackToMenu_Click(object sender, EventArgs e)
        {
            this.Close();
        }
    }
}

Public mwVoorraad()
        {

            InitializeComponent();
            FillDataGrid();
           
        }
        public void FillDataGrid()
        {
            dt.Rows.Clear();
            dt.Columns.Clear();
            dt.Columns.Add("Merk");
            dt.Columns.Add("Type");
            dt.Columns.Add("Maat");
            dt.Columns.Add("Kleur");
            dt.Columns.Add("Prijs");
            dt.Columns.Add("Aantal");

            foreach (string[] schoen in voorraad.schoenenvoorraad)
            {
                dt.Rows.Add(schoen);
            }
            dgvAdmin.DataSource = dt;
        }

        private void btVerkoop_Click(object sender, EventArgs e)
        {
           
        }

        private void btBackToMenu_Click(object sender, EventArgs e)
        {
            this.Close();
        }
    }
}

if there is anything else you spot wrong with the code please let me know!

145 replies

CC#

•Created by Gijs on 9/13/2023 in #help

✅ C# webforms counting problem

Hey I'm new to c# I have been working with c# for 3 days now but I stummbeld on a problem I can't get fixed

public int counter = 3;

MessageBox.Show("You have" + counter - 1 + "Tries left");

public int counter = 3;

MessageBox.Show("You have" + counter - 1 + "Tries left");

once I do this I get the error: Operator '-' cannot be applied to operands of type 'string' and 'int'. And I have no idea how to fix it. It's probarlly something really simple but I just can't seem to get it

6 replies

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