Win form DataGridView dynamically adding button column

Question

I'd like to add a button column dynamically to a DataGridView after it has been populated. The button column is visible after adding it, but when I try to loop through the DataGridView rows, I get a null for the button in each cell.

var buttonCol = new DataGridViewButtonColumn();
buttonCol.Name = "ButtonColumnName";
buttonCol.HeaderText = "Header";
buttonCol.Text = "Button Text";

dataGridView.Columns.Add(buttonCol);

foreach (DataGridViewRow row in dataGridView.Rows)
{
    var button = (Button)row.Cells["ButtonColumnName"].Value;
    // button is null here!
}

DeepakV · Accepted Answer · 2011-07-11 10:20:19Z

6

Use this:

foreach (DataGridViewRow row in dataGridView.Rows) 
{ 
    // DataGridViewButtonCell button = (row.Cells["ButtonColumnName"] as DataGridViewButtonCell); 
    row.Cells["ButtonColumnName"].Value = "ButtonText";
}

edited Jul 11, 2011 at 10:20

user557219

answered Jul 11, 2011 at 9:49

DeepakV

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Comments

Graham Clark · Accepted Answer · 2009-06-08 10:07:00Z

4

I tried the exact same thing a while ago and couldn't get it working; my solution (as it was just a test application) was to change the background colour of the button cell and test for that. Pretty awful. However, looking back at the code - have you tried casting the row.Cells["ButtonColumnName"] to a DataGridViewButtonCell and then checking out the properties on that?

answered Jun 8, 2009 at 10:07

Graham Clark

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Comments

j0k · Accepted Answer · 2013-02-09 08:31:42Z

1

You must add the bellow code in your code, then you can see "Button Text" on each boutton:

buttonCol.UseColumnTextForButtonValue = true;

edited Feb 9, 2013 at 8:31

j0k

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answered Feb 9, 2013 at 8:13

Peyman Panjehbashi

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spatulon · Accepted Answer · 2009-06-08 10:11:02Z

0

You might find this MSDN article useful: How to: Disable Buttons in a Button Column in the Windows Forms DataGridView Control

answered Jun 8, 2009 at 10:11

spatulon

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Comments

Rashmi Pandit · Accepted Answer · 2009-06-08 10:34:15Z

0

Use

foreach (DataGridViewRow row in dataGridView.Rows)
{
    DataGridViewButtonCell button = (row.Cells["ButtonColumnName"] as DataGridViewButtonCell);        
}

answered Jun 8, 2009 at 10:34

Rashmi Pandit

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