Hide selection in DataGridView

Today I was faced at work with the problem that when there is a datagridview always the first cell/row/column depending on the selection mode is selected. I looked therefore for a property or method to have nothing selected. The data grid view provides a method called “clear selection” which can be called with

dataGridView1.ClearSelection();

but for some reason this did not work for me. I tried to create a new project and to do the same thing and suddenly the “clear selection” method worked perfectly. To resolve my problem I finally used the following code:

foreach (DataGridViewCell cell in dataGridView1.SelectedCells)
  cell.Selected = false;

This simply takes the list of selected cells and sets the "Selected"-property to false. This can also be done with only the rows or columns with the following code snippets:

foreach (DataGridViewRow row in dataGridView1.SelectedRows)
  row.Selected = false;

foreach (DataGridViewColumn column in dataGridView1.SelectedColumns)
  column.Selected = false;

If you use the version for individual cells you cover also the row and column selection. So it is not needed to have all three loops.

I tried also with the code

if(dataGridView1.SelectedCells.Count > 0)
   dataGridView1.SelectedCells[0].Selected = false;

Which surprisingly did produce an error in the project but worked when I tried it in the new "clean" project. Please note that this code can only be used if multiple selection is not allowed!
I could not find out what where the differences between the empty project and my other project but if you encounter a similar behaviour the foreach loop should solve the issue; at least id did for me :-)

Tested with:
Visual Studio 2005 Express Edition
.NET Framework 2.0