Right-click to select a datagridview row.

Question

How do you select a datagridview row on a right-click?

Answer 1

    // Clear all the previously selected rows
    foreach (DataGridViewRow row in yourDataGridView.Rows)
    {
      row.Selected = false;
    }

    // Get the selected Row
    DataGridView.HitTestInfo info = yourDataGridView.HitTest( e.X, e.Y );

    // Set as selected
    yourDataGridView.Rows[info.RowIndex].Selected = true;

Answer 2

You can use JvR's code in the MouseDown event of your DataGridView.

Answer 3

Subclass the DataGridView and create a MouseDown event for the grid,

private void SubClassedGridView_MouseDown(object sender, MouseEventArgs e)
{
    // Sets is so the right-mousedown will select a cell
    DataGridView.HitTestInfo hti = this.HitTest(e.X, e.Y);
    // Clear all the previously selected rows
    this.ClearSelection();

    // Set as selected
    this.Rows[hti.RowIndex].Selected = true;
}

Answer 4

Make it behave similarly to the left mouse button? e.g.

private void dataGridView_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e)
{
    if (e.Button == MouseButtons.Right)
    {
        dataGridView.CurrentCell = dataGridView[e.ColumnIndex, e.RowIndex];
    }
}

Answer 5

You have to do two things:

1. Clear all rows and Select the current. I loop through all rows and use the Bool Expression i = e.RowIndex for this

2. If you have done Step 1 you still have a big pitfall:
   DataGridView1.CurrentRow does not return your previously selected row (which is quite dangerous). Since CurrentRow is Readonly you have to do

   Me.CurrentCell = Me.Item(e.ColumnIndex, e.RowIndex)

   Protected Overrides Sub OnCellMouseDown(
       ByVal e As System.Windows.Forms.DataGridViewCellMouseEventArgs)
   
   
   MyBase.OnCellMouseDown(e)
   
   
   Select Case e.Button
       Case Windows.Forms.MouseButtons.Right
           If Me.Rows(e.RowIndex).Selected = False Then
               For i As Integer = 0 To Me.RowCount - 1
                   SetSelectedRowCore(i, i = e.RowIndex)
               Next
           End If
   
   
           Me.CurrentCell = Me.Item(e.ColumnIndex, e.RowIndex)
   End Select
   
   
   End Sub