Unselect all rows in datagridview

Question

I have two datagridviews, and when I click to one of them, I would like to deselect all selection in the second datagridview, I tried this, but nothing works:

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

not working,

firstItemsDataGridView.ClearSelection();
if (firstItemsDataGridView.Rows.Count > 0)
    firstItemsDataGridView[1, 0].Selected = true;
firstItemsDataGridView.CurrentCell = null;
firstItemsDataGridView.ClearSelection();
foreach (DataGridViewRow item in firstItemsDataGridView.Rows) {
    item.Selected = false;

    foreach (DataGridViewCell itemCell in firstItemsDataGridView.Columns) {
        itemCell.Selected = false;
    }
}

not working,

firstItemsDataGridView.Rows[0,-1].Selected = true;

not working too.

I have set selecting mode to full row selection, and I have no idea how to achieve my goal.
thanks a lot!

Solution 1

dataGridView1.ClearSelection();

Should work. Maybe you have code that auto selects rows which is triggered?

Solution 2

An answer at NullSkull solved the problem for me which was that the cell at row 0, column 0 for the datagridview control was always selected on form load, and could not be deselected despite calling ClearSelection within the form's constructor method. I just had to call ClearSelection in the Form_Load event. http://www.nullskull.com/q/10066166/how-to-deselect-the-first-row-when-the-form-i-loaded-in-datagridview-in-windows-application.aspx

Solution 3

Since there is no answer, and I used this answer in other posts and i ran into the same issue of first row being selected and deselecting wasn't possible:

Color blue  = ColorTranslator.FromHtml("#CCFFFF");
Color red = ColorTranslator.FromHtml("#FFCCFF");
Color letters = Color.Black;

foreach (DataGridViewRow r in datagridIncome.Rows)
{
    if (r.Cells[5].Value.ToString().Contains("1")) { 
        r.DefaultCellStyle.BackColor = blue;
        r.DefaultCellStyle.SelectionBackColor = blue;
        r.DefaultCellStyle.SelectionForeColor = letters;
    }
    else { 
        r.DefaultCellStyle.BackColor = red;
        r.DefaultCellStyle.SelectionBackColor = red;
        r.DefaultCellStyle.SelectionForeColor = letters;
    }
}

This is a small trick, the only way you can see a row is selected, is by the very first column (not column[0], but the one therefore). When you click another row, you will not see the blue selection anymore, only the arrow indicates which row have selected.

SOLUTION:

i found out why my first row was default selected and found out how to not select it by default.

By default my datagridview was the object with the first tab-stop on my windows form. Making the tab stop first on another object (maybe disabling tabstop for the datagrid at all will work to) disabled selecting the first row

Solution 4

Just use:

dgvName.ClearSelection();

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