CODEWITHSUNDEEP
c#winformsvisual-studio-2012
DotNet Developer
DotNet Developer

Reputation: 3018

How to stop Designer from generating DataGridViewColumn

I am developing MyDataGridView control with fixed columns and rows.

public partial class MyDataGridView
{
     public MyDataGridView()
     {
         CreateColumns();
         CreateRows();
     }
}

When I add MyDataGridView onto a Form at design-time the designer is autogenerating more columns - exactly the same columns as created with CreateColumns() in the constructor above. Can I stop the designer from doing this? 

private void CreateColumns(); // Creates columns of MyDataGridView.

Please add this code to a WindowsFormsApplication project, compile and drag MyDataGridView control from ToolBox on a Form1 then run the application. See how the Designer behaves and generates code (Form1.Designer.cs).

namespace WindowsFormsApplication1
{
    public class MyDataGridView : System.Windows.Forms.DataGridView
    {
        public MyDataGridView()
        {
            CreateColumns();
            CreateRows();
        }

        private void CreateColumns()
        {
            for (int day = 0; day < 7; day++)
            {
                this.Columns.Add(new DataGridViewTextBoxColumn());
            }
        }

        private void CreateRows()
        {
            for (int n = 0; n < 6; n++)
            {
                this.Rows.Add(new DataGridViewRow());
            }
        }
    }
}

Upvotes: 1

Views: 262

Answers (1)

AbhiJA
AbhiJA

Reputation: 341

Try this approach:-

First set AutoGenerateColumns="False" and cancelling the generation of the column if it's ColumnName equals to the value you can exclude, like

 private void MyDataGrid_AutoGenerateColumn(
object sender, DataGridAutoGeneratingColumnEventArgs e)
    {
        if ((string)e.Column.Header == "fieldname")
        {
            e.Cancel = true;
        }
    }

Upvotes: 1

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