I need to select all the cells of a column which header was clicked ,
i took this from the following post :
when a certain column is clicked i wan't to select all it's respected cells.
cs :
private void OnColumnsClicked(object sender, RoutedEventArgs e)
{
var columnHeader = (DataGridColumnHeader)e.OriginalSource;
this.AssociatedObject.SelectedCells.Clear();
for (int i = 0; i < this.AssociatedObject.Items.Count; i++)
{
var cellInfo = new DataGridCellInfo(this.AssociatedObject.Items[i], columnHeader.Column);
this.AssociatedObject.SelectedCells.Add(cellInfo); // Here is where the Exception is thrown when adding to the SelectedCells collection .
}
}
the problem is that after adding the second cell to SelectedCells i get the following exception :
The collection already contains the item.
Important :
When creating cellInfo it has a value for Item and Column properties (See attached image) :
After adding is to SelectedCells , see SelectedCells[0] :
Any ideas why the Cell is being zero'd after adding it to SelectedCells ?
DataGridCellInfo (struct) equality check (from reflector):
internal bool EqualsImpl(DataGridCellInfo cell)
{
return (((cell._column == this._column) && (cell.Owner == this.Owner)) && (cell._info == this._info));
}