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I am assigning my grid a context menu.  However, I only want the context menu on the contents of the grid, not on the column nor row headers.  How would I do that?

In case you care, I'm doing this in code using the following:

myGrid.ContextMenuOpening += MyGrid_ContextMenuOpening;
myGrid.ContextMenu = gridCM 
Dinko | Tech Support Engineer
Telerik team
 answered on 26 Jun 2018
9 answers
5.2K+ views

I have a couple of buttons embedded in a header column of my radgridview that is in a usercontrol that is in a pane of a raddock. I am trying to bind the IsVisible property of the button to a property of my MainWindows' view model. Below is the relevant xaml. See line 7 of the xaml. I can't seem to get the binding right. What's the right way to bind this property to the MainWindow's viewmodel property? Obviously, I'm not seeing it.

Any help would be great!!!

Here is the error I get in my command window of vstudio.:

     System.Windows.Data Error: 4 : Cannot find source for binding with reference      'RelativeSource FindAncestor, AncestorType='System.Windows.Window',      AncestorLevel='1''. BindingExpression:Path=DataContext.EnableRowDetailsButton;      DataItem=null; target element is 'Button' (Name='cmdAddNewSample'); target property is     'IsEnabled' (type 'Boolean')

 

01.<telerik:GridViewDataColumn Width="auto" >
02.    <telerik:GridViewDataColumn.Header>
03. 
04.        <StackPanel Orientation="Horizontal">
05.            <Button Content="Add New" x:Name="cmdAddNewSample"
06.                Click="cmdAddNewSample_Click" Tag="AddOrUploadButton"
07.                IsEnabled="{Binding DataContext.EnableRowDetailsButton,
08.                                RelativeSource={RelativeSource FindAncestor,
09.                                                AncestorType={x:Type Window}}}"
10.                Margin="0,5,5,5"/>
11.            <Button Content="Upload" x:Name="cmdUploadSample" Tag="AddOrUploadButton"
12.                IsEnabled="{Binding DataContext.EnableRowDetailsButton,
13.                                RelativeSource={RelativeSource FindAncestor,
14.                                                AncestorType={x:Type Window}}}"
15.            Command="{Binding DataContext.UploadSampleCommand, Mode=TwoWay,
16.                                RelativeSource={RelativeSource FindAncestor,
17.                                                AncestorType={x:Type UserControl}}}"
18.                Margin="0,5,0,5"/>
19.        </StackPanel>
20.    </telerik:GridViewDataColumn.Header>
21.</telerik:GridViewDataColumn>

 

Thanks ... Ed

 

Ivan Ivanov
Telerik team
 answered on 26 Jun 2018
1 answer
158 views

Hi Team,

 

I have to use AutoCompleteBox with multiple items, but I need to add some custom text between each selected items.

For an example, if the AutoCompleteBox is bound with following items like FileName, ReceivedDate, FileSize, etc., And the AutoCompleteBox with custom text and the selected items with cross buttons like below.

"File name is {FileName} and it is received on {ReceivedDate}"

 

Does this possible in AutoCompleteBox?

 

Regards,

Sathya

Kalin
Telerik team
 answered on 25 Jun 2018
2 answers
302 views
Hi Telerik ,

i have some problem to find a solution here for ..
first i am using RadGridView + MVVM + QueryableCollectionView.

The "pattern" is like this
My ViewModel  has a property named "Nodes" which is a derived class of  QueryableCollectionView which i am using because of paging feature.
The Problem i have is that the QueryableCollectionView is a wrapper for a IQueryable sourceCollection which is only set by constructor and there is not setter
for the wrapped source collection after its constructed.

So ok, i have done a workaround and creating a new Instance during RT of QueryableCollectionView with correct IQueryable parameter ( which by the way i do not have before ) and
set my ViewModel "Nodes" property to this new instance.

This works and i can see the Data correctly also paging works because the Grid gets notified about the change. ( it looks like so !)

In the "Nodes" Class i also have a "Command" property which is an Instance of a CommandProviderClass derived from prism.mvvm BindableBase ( which implements INotifyPropertyChanged )
and additionaly encapsulates a lot of other possible commands for Insert/Update/Delete .

And this "Command" property also gets replaced by the  "newer" instance of "Nodes" because the Nodes Class holds this property.
My ViewModel has a wrapper to this Nodes.CommandProvider

BUT ...


So now my Problem is raised during the Event "RowValidating" i found that the  User Control is still bound to old CommandProvider.DoValidatingRow 

because   

public ICommand DoValidatingRow { get; set; } // On Validate a Row
.... is initialized with
DoValidatingRow = new DelegateCommand<object>(OnValidatingRow);
 
But ICommand and DelegateCommand (Prism.Commands) Class have no INotifyPropertyChanged Contract defined.
 
<telerik:EventBinding Command="{Binding CommandProvider.DoValidatingRow}" EventName ...

i already also called on my VM   this.RaisePropertyChanged(""); before the validation is called but no effect. It´s doesn´t change!

A) So my main Question is how can i tell the User Control to refresh all of it´s bounded Class Instances ?

B) Maybe is there another solution to replace the wrapped Source Collection in QueryableCollectionView , because this will solve the original problem ?

thanks br thomas cinatl


        <telerik:RadGridView x:Name="LookupListGridCtrl" ItemsSource="{Binding Nodes, Mode=TwoWay}" SelectedItem="{Binding Nodes.SelectedUiDataItem,Mode=TwoWay}"  Grid.Row="1"
                             AutoGenerateColumns="false" GroupRenderMode="Flat" NewRowPosition="Top" SelectionMode="Single" SelectionUnit="FullRow"
                             CanUserDeleteRows="True" ScrollMode="Deferred" IsSynchronizedWithCurrentItem="True" CanUserResizeColumns="True" CanUserSearch="True"
                             RowIndicatorVisibility="Visible" Margin="0,0,0,1" ValidationType="Default"
                             FilteringMode="FilterRow" ShouldCloseFilteringPopupOnKeyboardFocusChanged="True"
        >
 
            <telerik:EventToCommandBehavior.EventBindings>
                <telerik:EventBinding Command="{Binding CommandProvider.DoDeleteRow}" EventName="Deleted" RaiseOnHandledEvents="True" PassEventArgsToCommand="True" />
                <telerik:EventBinding Command="{Binding CommandProvider.DoInsertRow}" EventName="RowEditEnded" RaiseOnHandledEvents="True" PassEventArgsToCommand="True" />
                <telerik:EventBinding Command="{Binding CommandProvider.DoAddNew}" EventName="AddingNewDataItem" RaiseOnHandledEvents="True" PassEventArgsToCommand="True" />
                <telerik:EventBinding Command="{Binding CommandProvider.DoValidatingCell}" EventName="CellValidating" RaiseOnHandledEvents="True" PassEventArgsToCommand="True" />
                <telerik:EventBinding Command="{Binding CommandProvider.DoValidatingRow}" EventName="RowValidating" RaiseOnHandledEvents="True" PassEventArgsToCommand="True" />
                <telerik:EventBinding Command="{Binding CommandProvider.DoSelectionChanging}" EventName="SelectionChanging" RaiseOnHandledEvents="True" PassEventArgsToCommand="True" />
            </telerik:EventToCommandBehavior.EventBindings>







 

Thomas
Top achievements
Rank 1
 answered on 23 Jun 2018
1 answer
108 views

Hello,

We are playing with the interactive form pdf and when you are in the field editing the text and then we go to save the document the field has not yet been updated with the new value.  Is there a way to force them out of the field editing and update the text of the field when they click the save button?

Thanks,

Brandon

Georgi
Telerik team
 answered on 22 Jun 2018
2 answers
195 views

Being new to Telerik controls I'm struggling to get RadGridView to populate automatically with SQL query collection.
I have some questions to understand what can and cannot be done and go from there:
I have a SQL query result collection contains over 4,000 records is there a way to set dump the datatable directly into the RadGridView with "AutoGenerateColumns="True"",
or do i have to iterate through all the rows?
Secondly I have the RadGridView in a tab of a RadPaneGroup. Which action should I use to only call the RadGridView population when its tab is selected?

Michael Bouhuys
Top achievements
Rank 1
 answered on 22 Jun 2018
4 answers
109 views

Hi,

I try to change text of "Grand Total" with Localization Manager, set the localization for "Pivot_GrandTotal", but nothing happened. Other text, such as "Pivot_AggregateSum", "Pivot_AggregateCount", and other are translated successfully, but "Pivot_GrandTotal" not.

Could you help me?

Thanks

Martin
Top achievements
Rank 1
 answered on 22 Jun 2018
3 answers
188 views

I am using the telerik library with version 2017.3.1018.45.
At the moment I'm struggling with a drag & drop implementation between a RadGridView and RadTreeView. A row must be draggable from the RadGridView to the RadTreeView only.
The drag & drop from the grid to the tree works perfectly. Unfortunately it is also possible to drop elements from the grid on the grid itself. The Effects property of GiveFeedBackEventArgs in OnGiveFeedback() is Move when staying with the mouse over the grid. It should be None though.

Setting AllowDrop=false on the grid does not make a difference.
I as well tried to disallow dropping before the mouse pointer leaves the grid - using OnDragLeave - but it fires as well when the pointer still is over the grid.
Another approach is to compare the source and destination when dropping. It does not seem possible though to figure out the drop destination in the OnDrop or OnDragDropCompleted events.

How can I omit dropping a grid element on the same grid?

Rico
Top achievements
Rank 1
 answered on 22 Jun 2018
5 answers
149 views

The shape's minheight is 60, The name of the object displays on the bottom of the shape, when  zoom out the  shape,  the name string may word wrap,  so the shape's minheight  is increase by a new line's height,   but when resizeing, the minheight of the bounds is not change,

how to solve this problem?

thanks!

Dinko | Tech Support Engineer
Telerik team
 answered on 22 Jun 2018
5 answers
108 views
Hi,

Is there a way to get the RadCalculatorPicker to display a cursor during input?  Right now, whatever user types shows in the TextBlock but it does not offer user the same look & feel as a regular input control.

Thanks.

Rubens.
Dinko | Tech Support Engineer
Telerik team
 answered on 22 Jun 2018
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