I'm extending a GridViewComboBoxColumn, setting IsComboBoxEditable to true, and trying to provide code to add typed text as items into the ItemsSource collection.

I hooked the CellEditEnded event of the GridView and added some test code to play with this idea:

private void TestGrid_CellEditEnded(object sender, Telerik.Windows.Controls.GridViewCellEditEndedEventArgs e)
{
    var comboBoxColumn = e.Cell.Column as Telerik.Windows.Controls.GridViewComboBoxColumn;
   
    // only continue if its a cell for the column we're interested in
    if ((comboBoxColumn == null) || (comboBoxColumn.UniqueName != "Lookup"))
        return;

    // get back the object used to represent the row
    var gridItem = e.Cell.DataContext as GridItem;
           
    // only continue if the text typed is not in the list
    if (gridItem.SelectedLookupItem != null)
        return;

    var cellComboBox = (RadComboBox)e.EditingElement;
    var lookupItemCollection = cellComboBox.ItemsSource as ObservableCollection<LookupItem>;

    var newItem = new LookupItem() { Name = cellComboBox.Text };
    lookupItemCollection.Add(newItem);

    //set the typed item as the selected item
    gridItem.SelectedLookupItem = newItem;
}

Works great. Now I want to move that code into my extended GridViewComboBoxColumn. How could I hook/override the CellEditEnded from inside the extended column?

I have two different collections with items of type A and B where B contains a child collection of type A and I'm displaying these two collections in two different RadGridViews and what I want to do is to be able to drag an item from one grid to the other so that I can add the appropriate item to the child collection (thus building a relationship between the two collections). I'm fairly new with WPF and just can't seem to see how to modify the examples to accomplish this DnD scenario. I'm guessing that I have to call the appropriate RadDragAndDropManager static methods for each row of the grid but as my grids are bound to my collection (via a View Model) I'm not sure how to do this or if it's the correct approach.

Any help/pointers would be greatly appreciated!

-Gary

I'm sure there is some property I am missing, but I am having an issue on initial load of the grid.

Given the following code, if I expand the width of "Column 1" to the right, I never get the horizontal scrollbar visible to scroll to view the hidden columns.  This happens with EnableColumnVirtualization set to "True" as well.

how to customize RadDataForm. means how to add manually textbox , combobox , datatime and etc control
and how to bind with database.
please give me example.

Hi,

We are currently having issues running our application on Windows 7 tablet PC's. When the grid has data, we get a NullReferenceException. I found it that the exception will not occur when removing a specific column definition from the gridview:

  <telerik:GridViewColumn     CellTemplate="{StaticResource StatusButtons}"
                                            IsFilterable="False"
                                            MaxWidth="120"
                                            MinWidth="120"
                                            />

The application works fine on non-touch devices, but on touch devices (Win 7, .Net 3.5) the error occurs. Stopping the "Tablet PC Input" service does not help as mentioned in other threads.

The exception plus stacktrace



The Xaml:

The version of the Telerik WPF components being used: 2010.2.0716.35.

How can we solve this issue?

Kind regards,

Mike

Is there anyway to delay the execution of the query? What I'd like to do is create the datasource. Bind a DataFilter to it, then bind a gridview to the filtered source. But I'd like to not show any results in the gridview until the user has added filters. Basically use this as a searching mechanism.

Is this possible?

Also, are there any samples on how to use this in an MVVM scenario using QueryableEntityCollection<T> in the viewmodel?

i had an wpf application contains radtreeview ,i add HierarchicalDataTemplate inside RadTreeview Item Template which contains:

1- RadComboBox 
2- grid contains three textboxs and radcombobox.

when radcomobox selectionchanged the grid bind data into textboxes  according to the selected value in the combobox.

how i can return the current row when RadComboBox is changed, and how i get the contorls inside the row as well.

Regards 

I want to get the row in the data loaded event to set the focus on that row.

Hi there

I'm grouping appointments on a day view by employees (EmployeeResource) so I see all the employee's appointments for the day on a column. Now, in the header template, I would like to show a total of hours already assigned (basically the sum of appointments durations.

The dirty version would be to provide such a total as a property of the EmployeeResource and update my resources on all edited/created/deleted events. However, I'm hoping there's a more elegant approach to this.

Thanks for your advice
Philipp

I am trying to bind a RadGrid to a generic list of custom class through OnNeedDataSource. The grid displays the correct number of rows, however, the values for the fields are empty. I can bind to a datasource object without a problem, but I am going to be adding additional functionality where this method will be necessary. For simplicity sake, I am just trying to bind a single exposed property from the custom class object.

.ASPX


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