I have a bit of a programming challenge…

We have a form that has a RadGrid whose itemsource is bound to collection.  That collection includes a Boolean field named ‘Selected’.
The form also has a ‘Select all’ button.

The user filters the grid based on customer, so it is displaying only 10 of the 50 items in the collection.

When they click the ‘Select all’ button, they want the items Selected property to be true for only the 10 records that are displayed in the grid.

If I can get a collection of just the rows displayed in the grid I could roll through both collections to locate matches.   I haven’t figured out a way to get the ‘filtered’ collection, and wonder if there is a more efficient way to accomplish the task.

Any ideas would be greatly appreciated.

Thanks in advance,
Lou

        private void RadRibbonView_SelectionChanged(object sender, RadSelectionChangedEventArgs e)
        {

              if (ribbon.SelectedItem is RadRibbonTab)
                {
                    //keepBackstageOpen = false;
                    //MasterRadRibbonView.IsBackstageOpen = false;
                    System.Diagnostics.Debug.WriteLine("RadRibbonTab");
                }
                else if (ribbon.SelectedItem is RadRibbonBackstage)
                {
                    //keepBackstageOpen = true;
                    //MasterRadRibbonView.IsBackstageOpen = true;
                    System.Diagnostics.Debug.WriteLine("RadRibbonBackstage");
                }

        }

If I click on the backstage, this always triggers as a tab (the last one selected), and not as the backstage...which is causing me many problems.

Any advice ?

Good morning, i had a issue when a try to move the RadPane that contains the RadGridView only when i use the theme VisualStudio2013. I try everything, with  any other theme work just fine. Pop into Output window in Visual Studio the following binding error for each column i have int the RadGridView, and it slows the application in a way that is very painful :

System.Windows.Data Error: 4 : Cannot find source for binding with reference 'RelativeSource FindAncestor AncestorType='Telerik.Windows.Controls.GridView.DataCellsPresenter', AncestorLevel='1''. . BindingExpression:Path=Foreground; DataItem=null; target element is 'ContentControl' (Name='PART_ContentPresenter'); target property is 'Foreground' (type 'Brush')

I try taking of styles of header cells and such, but does not work. The others themes works with custom styles and without it.

I want to add context menu for RadGridView and tried below code.. but it gives error as in the attached screenshot. please let me know how to proceed.

<telerik:RadGridView x:Name="radGridView" AutoGenerateColumns="False">
            <ui:RadContextMenu.ContextMenu>
                <ui:RadContextMenu x:Name="GridContextMenu" />
            </ui:RadContextMenu.ContextMenu>
            <telerik:RadGridView.Columns>
                <telerik:GridViewDataColumn DataMemberBinding="{Binding FirstName}" Header="First Name"/>
                <telerik:GridViewDataColumn DataMemberBinding="{Binding LastName}" Header="Last Name"/>
                <telerik:GridViewDataColumn DataMemberBinding="{Binding Age}" Header="Age"/>
                <telerik:GridViewDataColumn DataMemberBinding="{Binding IsMarried}" Header="Married"/>
            </telerik:RadGridView.Columns>
        </telerik:RadGridView>

Hello,

Our app is extremely heavy with Telerik controls (we use it for just about everything in our UI). We've been getting complaints about the overall memory footprint of our app. Obviously most of that would likely be due to data and business logic, but we also were looking to do an analysis of all (Terlerik) controls being used to see if any are contributing factors. One of our designers mentioned that he feels the Telerik grid control is "very expensive" from a memory point of view - and we use it all over the place in our app, even in places where the stock WPF grid control may have been good enough.

Are there any utilities to track all the controls memory usage ?....or any ways to tap into the controls to find out the memory usage of each individually ?

Any suggestions would be appreciated.

Thanks,

Barry

Can i set the TreeListViewItem visibility to visible or hide, when i use the treelistiview in Virtualization model.

I want to use this method to search something,or may be another?

Hi.

When clicked crop item and then directly press save button, cropped image is saved.It seems cropped result image save.

What i want  no cropping just save image. Please refer to the file for details.

How can i get uncropped image.

Please give me advise. 

Thanks reading this post.

Hi Telerik support team,

I have a TabbedWindow with RadTabItems generated dynamically from code behind. In each RadTabItem, there is frame that I navigated to a Page.

The trouble is that: When a user drags a tab out of a host TabbedWindow, if the drop is inside a RadTabItem (I meant users just drag out the header and drop inside a tab), the tab is not dragging out. In plus, since this moment, all drag-out is not working even drop area is outside a tab.

Many thanks for your support

Here is my code in C#:

And Xaml as below:

Hi,

I have a GridView with GridViewSelectColumn ,which have binded itemsource and seted selectionmode "Multiple".But the grid always have selected the fist value of itemsource and the selecteditem is same value.

 My expectation is nothing selected,how to solve it.

Regards,
Guo