checkbox in a data grid view....

[jainiraj]

I want that check box in a datagridview should act like a radio button.Means whenever I select a checkbox it will be selected and rest of all would be deselect. I have used cellContentClick event of the datagrid view.Structure of the datagridview is like- 1st column is checkbox and 2nd is text box.following is the code i have used- for (int i = 0; i < dataGridView1.Rows.Count; i++) { if (i == e.RowIndex) { dataGridView1.Rows[i].Cells[0].Value = true; } else { dataGridView1.Rows[i].Cells[0].Value = false; } } The above code runs good when i select another checkbox.But when one checkbox is selected/checked and now I again click on the same checkbox then it is deselected/unchecked.I want when the same checkbox is checked again it won't unchecked and remian checked. How can I do this? Thanks in adv....

[fjdiewornncalwe]

If you must use checkboxes and not radiobuttons, then you could add something like the following to your call. You will of course want to add some better validation.

for( int i = 0; i < dataGridView1.Rows.Count; i++ )
{
    CheckBox ctl = (CheckBox)dataGridView1.Rows\[i\].FindControl( "CheckBoxControlName" );
    if( ctl != null )
    {
        ctl.Checked = ( i == e.RowIndex );
        ctl.Enabled = !( i == e.RowIndex );
    }
}

This would simply disable the currently selected checkbox while allowing any other to be selected. (NOTE: I just hammered this out in the editor. If I have a syntax error or typo... sorry.)

modified on Wednesday, October 13, 2010 2:50 PM

[ekba89]

You can do that by changing readonly property as below.

private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
for (int i = 0; i < dataGridView1.Rows.Count; i++)
{
if (i == e.RowIndex)
{
dataGridView1.Rows[i].Cells[0].Value = true;
dataGridView1.Rows[i].Cells[0].ReadOnly = true;
}
else
{
dataGridView1.Rows[i].Cells[0].Value = false;
dataGridView1.Rows[i].Cells[0].ReadOnly = false;
}
}
}