Remove blue colored row from DataGridView WinForms

Question

When I fill a DataGridView row by row (calling it\'s add function), the top row gets blue colored. It\'s not selected because I tried ClearSelection() also but it didnt work

Answer 1

In Form.Shown Event Just do a:

dataGridView1.ClearSelection();
dataGridView1.CurrentCell = null;

Answer 2

To achieve this along with the ClearSelection you will need to set one more property

Try this in the DataBindingComplete

dataGridView1.ClearSelection();
dataGridView1.CurrentCell = null;

EDIT

Based on your comments you can modify the code as

if (e.KeyCode == Keys.Up && dataGridView1.CurrentCell.RowIndex == 0)
{                   
     this.ActiveControl = textBoxPartySearch;
     dataGridView1.Refresh();
     dataGridView1.ClearSelection();
     dataGridView1.CurrentCell = null;
     e.Handled = true;
}

Answer 3

I tried the above methods but nothing worked for me.

Finally, I just decided to set the default colors for selected cells to be the same as non-selected cells.

Then, in the cell click method, I set them back. That way nothing appears selected until its clicked, which was sufficient for my application. Here's the code I used in the click method to set everything back to normal:

dataGridView.DefaultCellStyle.SelectionBackColor = SystemColors.Highlight;
dataGridView.DefaultCellStyle.SelectionForeColor = SystemColors.Window;

Annoyingly, the ClearSelection method actually works just fine if I put it in a button, but if I create the control which contains the datagrid, load some data into it, and then try to clear it right then, it doesn't work. I wish I knew why...

Answer 4

After three hours of troubleshooting this, I've figured it out: Your DataGridView needs to be displayed on the screen before calling dataGridView.ClearSelection().

How I know this works:

I have two DataGridViews, each in a different panel. Only one panel is visible at a time. In the panel that's initially visible, the DataGridView has never ignored my call to ClearSelection(), so I've never seen a row selected right away.

I used to populate the other DataGridView and clear its selection before showing the panel that contains it, but that top row was always still highlighted. I changed my code to display the other panel before clearing the DataGridView's selection, and the call to ClearSelection() worked as it should.

Answer 5

Try adding ClearSelection() to VisibleChanged event as follows:

private void datagridview1_VisibleChanged(object sender, EventArgs e)
{
datagridview1.ClearSelection();
}