Hello, Dmitry,
Note that when you make the entire column read only. It is achieved by setting the column's
ReadOnly property to true. However, if you cancel the
CellBeginEdit event to indicate the cell is read only, you can create a custom
RadGridView and override the
ProcessDialogKey method to handle the Tab key and to override the
OnMouseDown method to handle the mouse input. Here is demonstrated a sample approach how to skip making the read only cell current and moving to the next cell when pressing Tab:
public class CustomGrid : RadGridView
{
protected override void OnMouseDown(MouseEventArgs e)
{
GridCellElement cellUnderMouse = this.GridViewElement.ElementTree.GetElementAtPoint(e.Location) as GridCellElement;
if (cellUnderMouse != null && !IsEditingAllowed(cellUnderMouse.RowInfo.Cells[cellUnderMouse.ColumnInfo.Name]))
{
return ;
}
base.OnMouseDown(e);
}
protected override bool ProcessDialogKey(Keys keyData)
{
if (this.CurrentRow != null)
{
int rowIndex = this.CurrentRow.Index;
int columnIndex = this.CurrentColumn.Index;
GridViewCellInfo cellInfo;
if (columnIndex < this.Columns.Count - 1)
{
columnIndex++;
}
else
{
columnIndex = 0;
if (rowIndex < this.Rows.Count - 1)
{
rowIndex++;
}
else
{
rowIndex = 0;
}
}
cellInfo = this.Rows[rowIndex].Cells[columnIndex];
if (keyData == Keys.Tab)
{
while (!IsEditingAllowed(cellInfo.RowInfo.Cells[cellInfo.ColumnInfo.Name]))
{
if (columnIndex < this.Columns.Count - 1)
{
columnIndex++;
}
else
{
columnIndex = 0;
if (rowIndex < this.Rows.Count - 1)
{
rowIndex++;
}
else
{
rowIndex = 0;
}
}
cellInfo = this.Rows[rowIndex].Cells[columnIndex];
}
this.CurrentRow = cellInfo.RowInfo;
this.CurrentColumn = cellInfo.ColumnInfo;
return true;
}
}
return base.ProcessDialogKey(keyData);
}
private bool IsEditingAllowed(GridViewCellInfo cell)
{
if (cell.ColumnInfo.Name == "ProductName")
{
return false;
}
return true;
}
}
Note that this is just a sample approach and it may not cover all possible cases. Feel free to modify it in a way which suits your requirement best.
I hope this information helps. If you have any additional questions, please let me know.
Regards,
Dess
Progress Telerik