DataGridView: how to enable multiple row selection but disable multiple cell selection?

Question

I am looking for a way to enable multiple row selection in a DataGridView-Control, but disable multiple cell selection.

What I have tried so far:

• DataGridView.MultiSelect = true allows you to select multiple rows and cells
• ClearSelection () in the DataGridView_CellMouseClick-Event and re-selecting the last selected cell does not look very nice (you see that the old cell deselects and then the new cell is selected; SuspendLayout () and ResumeLayout () do not help)
• DataGridView.SelectionMode = DataGridViewSelectionMode.FullRowSelect is not an option: if the user clicks on a cell, it should select only this cell

This is for the export function: the user should be able to export the selected lines to a file, but in general he should not select more than one cell (for copy and paste, etc.).

Hi,

Inno

----- [UPDATE] -----

Here is my implementation. Works great (comments removed for compactness):

using System.Windows.Forms;

namespace YourAmazingNamespace
{
    public partial class SpecialSelectDataGridView: DataGridView
    {
        public SpecialSelectDataGridView()
        {
            InitializeComponent();
        }

        protected override void SetSelectedCellCore(int columnIndex, int rowIndex, bool selected)
        {
            ResetSelectedCells();

            base.SetSelectedCellCore(columnIndex, rowIndex, selected);
        }

        void ResetSelectedCells()
        {
            foreach (DataGridViewCell cell in SelectedCells) {
                base.SetSelectedCellCore(cell.ColumnIndex, cell.RowIndex, false);
            }
        }
    }
}

Several rows are selected using MultiSelect = true (the default value), and the selected cells are currently reset by calling ResetSelectedCells () before choosing a new one.

Hth, thanks and greet

Inno

Answer 1

SetSelectedRowCore SetSelectedCelCore .

MSDN :

DataGridView , . SelectionMode CurrentCell. ,

, , datagrid, .