Issue with doubleclick on datagrid

Question

I have the following on a datagrid in my C# code:

<DataGrid.InputBindings>  
    <MouseBinding Gesture="LeftDoubleClick" Command="{Binding CmdTransUnitFillerRowDblClick}" />  
</DataGrid.InputBindings>  

It works for the most part except if user first selects the row (single click) and then tries double-clicking the row. In this situation the CmdTransUnitFillerRowDblClick code is never fired for processing.

So, how can I get the CmdTransUnitFillerRowDblClick to fire correctly on a double-click when the row is already selected?
Since someone may ask:

private void ExecutecmdTransUnitFillerRowDblClick(object parameter)  
{
    if (DgTransUnitFillerSelectedItem != null)
        TransUnitFillerDoubleClick(DgTransUnitFillerSelectedItem.CollectionRowId);
}

Answer 1

See my answer to another related question. The problem is that the datagrid no longer has the focus after the user selects a row (or cell, actually); the cell that the user clicked in the datagrid does. So you have to change the focus back to the datagrid to allow this.

Change:

<DataGrid.InputBindings>  
    <MouseBinding Gesture="LeftDoubleClick" Command="{Binding CmdTransUnitFillerRowDblClick}" />  
</DataGrid.InputBindings>

To:

<DataGrid.InputBindings>  
    <MouseBinding Gesture="LeftDoubleClick" Command="{Binding CmdTransUnitFillerRowDblClick}" />  
    <MouseBinding Gesture="LeftClick" Command="{Binding CmdTransUnitFillerRowClick}" />  
</DataGrid.InputBindings>

...and add:

private void ExecutecmdTransUnitFillerRowClick(object parameter)  
{
    if (DgTransUnitFillerSelectedItem != null)
        The_Name_Of_Your_DataGrid.Focus();
}