Updating check box of current row of DataGridView

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Hey guys,
Weird issue. I am having a DataGridView with a CheckBox Column.
I am trying the set the values of the Checkbox column programmatically.
The issue is that all rows gets the check updated, but for some reason, the UI doesn't update the current row (mostly the selected one, but it still has the exception).
On debugging, I found that my code does every thing correctly. Here is the snippet -

C#

foreach (DataGridViewRow Row in dgvIgnoreApp.Rows)
{
    // CheckBoxColumn
    Row.Cells[0].Value = m_chkColumnHeaderIgnore.CheckAll; // Some Boolean value
}
dgvIgnoreApp.Invalidate();

I tried searching OL and the most I could go is where people suggested me to use DataGridView.CommitEdit() or DataGridView.EndEdit(). The new code looks like this -

XML

foreach (DataGridViewRow Row in dgvIgnoreApp.Rows)
{
    if (Row.Cells[0].Selected) // CheckBoxColumn
         dgvIgnoreApp.BeginEdit(false);

    Row.Cells[0].Value = m_chkColumnHeaderIgnore.CheckAll;

    if (Row.Cells[0].Selected)
         dgvIgnoreApp.EndEdit();
}
dgvIgnoreApp.Invalidate();

I used that but it is still giving me the same result.
Is it a MS .Net Bug? Help me guys...
Thanks in advance.

Posted 20-Sep-12 21:48pm

Varun Pandey

Updated 20-Sep-12 21:50pm

v2

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Ank_ush 21-Sep-12 5:35am

In which event have u written the above code?

2 solutions

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Varun Pandey · Answer 1 · 2012-09-21T05:12:00

I got a work around but don't know why this happened?

C#

foreach (DataGridViewRow Row in dgvIgnoreApp.Rows)
{    
    // CheckBoxColumn
    Row.Cells[0].Value = m_chkColumnHeaderIgnore.CheckAll; // Some Boolean value
}
dgvIgnoreApp.Enabled = false; //Miracle Line
dgvIgnoreApp.Enabled = true;  //Miracle Line

Discussion is still on for reasons and better answers.
Thanks you all.

--
Varun

Ank_ush · Answer 2 · 2012-09-20T23:53:00

Solution 1

Try this:-

Instead of this write this code:-

C#

Row.Cells[0].Value = m_chkColumnHeaderIgnore.CheckAll;

Write this:-

C#

Row.Cells[0].Value = CheckState.Checked;

Any problem please comment or reply.

Posted 20-Sep-12 23:53pm

Ank_ush

Comments

Varun Pandey 21-Sep-12 8:55am

Just to help - a very interesting Workaround, disabling & enabling DataGridView after modifying the rows resolves this issue.