WPF datagrid row double click event

Question

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Hi,

I am need to get a selected row value on double click of datagrid row. I found we need mousedouble click for this. Mouse double click event fires wherever we click on grid. To get value only on selection of the datagrid row I have written the following code

XAML:

XML

<datagrid autogeneratecolumns="False" name="dgTitlesPendingListofTitles" canuseraddrows="False" itemssource="{Binding}" mousedoubleclick="dgTitlesPendingListofTitles_MouseDoubleClick">
                        <datagrid.columns>
                            <datagridtextcolumn header="Artists-Titles" binding="{Binding Path=ArtistTitle}" visibility="Visible" width="*" isreadonly="False" />
                            </datagrid.columns>
                    </datagrid>

Code behind:

C#

private void dgTitlesPendingListofTitles_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            IInputElement element = e.MouseDevice.DirectlyOver;
            if (element != null && element is FrameworkElement)
            {
                if (((FrameworkElement)element).Parent is DataGridCell)
                {
                    var grid = sender as DataGrid;
                    if (grid != null && grid.SelectedItems != null && grid.SelectedItems.Count == 1)
                    {
                        var rowview = grid.SelectedItem as DataRowView;
                        if (rowview != null)
                        {
                            DataRow row = rowview.Row;
                        }
                    }
                }
            }
}

I am getting grid.SelectedItems.Count =0 so it is not going into that loop.Can anyone help me out with a solution or what is the mistake I am doing here.

Posted 12-Jun-11 21:14pm

pdmkosireddi

Updated 12-Jun-11 21:19pm

Tarun.K.S

v2

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Wayne Gaylard · Accepted Answer · 2011-06-12T22:00:00

Getting the selected element from DirectlyOver will return an IInputElement where the Parent is always null, therefore your second if loop will never get entered. If you only want to get the selected row from the DoubleClickEvent then you can do this:

C#

private void dgTitlesPendingListofTitles_MouseDoubleClick(object sender, MouseButtonEventArgs e)
       {
           if (sender != null)
           {
               DataGrid grid = sender as DataGrid;
               if (grid != null && grid.SelectedItems != null && grid.SelectedItems.Count == 1)
               {
                   DataGridRow dgr = grid.ItemContainerGenerator.ContainerFromItem(grid.SelectedItem) as DataGridRow;
               }
           }
       }

Hope this helps

Woldemar665 · Accepted Answer · 2012-12-18T05:21:00

Solution 2

Add RowStyle to DataGrid

XML

<DataGrid AutoGenerateColumns="False" Grid.Row="2" Margin="8,22,12,36" Name="resultDataGrid" IsReadOnly="True" >
            <DataGrid.RowStyle>
                <Style TargetType="{x:Type DataGridRow}">
                    <EventSetter Event="MouseDoubleClick" Handler="resultDataGrid_MouseDoubleClick"/>
                </Style>
            </DataGrid.RowStyle>
        </DataGrid>

And in code behind:

private void resultDataGrid_MouseDoubleClick(object sender, MouseButtonEventArgs e)
       {
           if (sender != null)
           {
                   DataGridRow dgr = sender as DataGridRow;
           }
       }

Posted 18-Dec-12 5:21am

Woldemar665

Comments

Thomas Daniels 18-Dec-12 11:27am

Why do you post an answer to a question from July? The problem is solved already.

Budokan1987 14-Jan-13 15:50pm

How can i get some value of the row? For example, if i have the following row: FirstName|LastName|Passport|Email and i want to take only the Passport, how can i do it? Thanks.

ErrCode 20-Jun-13 1:48am

You should be able to access your Passport field like so:

private void resultDataGrid_MouseDoubleClick(object sender, MouseButtonEventArgs e)
{
var row = sender as DataGridRow;
if (row != null)
{
var item = row.DataContext as Person; // replace Person with your object type
if (item != null)
{
var passport = item.Passport;
}
}
}

PS: Upvoted the RowStyle solution because it seems more elegant IMO.

WPF datagrid row double click event

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