Problem:

 

In my application I am displaying data in grid. I also want a radio button to be inserted in 1 st column. On the selection of that radio button new pop-up screen should appear having details of the selected row.

I am using Telerik:RadGridView to display data . I am able to fetch the data and display.

I am getting around 4000 records fetched, now when i select a radio button and scroll down the selected row is deselected and some other random row gets selected.Sometimes no rows gets selected.

 

Approach followed:

 

 

 

I have followed following approach using virtualization

Inside my RadGridView i worte

 

 

 

VirtualizingStackPanel.IsVirtualizing

 

 

="True"

 

 

 

ScrollMode="RealTime"

 

 

 

VirtualizingStackPanel.VirtualizationMode="Recycling"

 

 

 

 

 

 

 

 

ScrollViewer.IsDeferredScrollingEnabled="True"

 

 

 

 

 

 

and

 

 

 

 

 

 

<telerik:GridViewDataColumn Header="" Width="35" DataMemberBinding="{Binding IsSelected, Mode=TwoWay}">

 

 

 

 

 

 

 

 

<telerik:GridViewDataColumn.CellTemplate>

 

 

 

 

 

 

 

 

<DataTemplate>

 

 

 

 

 

 

 

 

<RadioButton Click="radEditGroup_Click" HorizontalAlignment="Center" Checked="radEditGroup_Checked" IsChecked="{Binding Path=IsSelected, Mode=TwoWay}" x:Name="radEditGroup" GroupName="Groups" />

 

 

 

 

 

 

 

 

</DataTemplate>

 

 

 

 

 

 

 

 

</telerik:GridViewDataColumn.CellTemplate>

 

 

 

 

 

 

 

 

</telerik:GridViewDataColumn>

 

 

 

 

 

 

 

 

 

In .cs file for Checked ="radEditGroup_Checked" i looped through groups and deselected the radio buttons and displayed last checked button value.

 

 

 

private

 

 

void radEditGroup_Checked(object sender, RoutedEventArgs e)

 

{

 

 

try

 

 

 

 

 

 

{

ClearMessage();

 

 

if ((sender as RadioButton) != null &&

 

((sender

 

as RadioButton).DataContext as Groups) != null)

 

{

 

 

var lobjSelectedGroups = from lobGroup in _Groups

 

 

 

where lobGroup.IsSelected == true

 

 

 

 

 

 

 

 

select lobGroup;

 

 

 

if (lobjSelectedGroups != null)

 

{

 

 

foreach (Groups lobGroup in lobjSelectedGroups)

 

{

lobGroup.IsSelected =

 

false;

 

}

}

 

 

this._intGroupID = ((sender as RadioButton).DataContext as Groups).FUNCTION_GRP_ID;

 

 

 

this._intFunctionId = ((sender as RadioButton).DataContext as Groups).Function_Id;

 

(sender

 

as RadioButton).Checked -= radEditGroup_Checked;

 

(sender

 

as RadioButton).IsChecked = true;

 

(sender

 

as RadioButton).Checked += radEditGroup_Checked;

 

}

}

 

 

catch (Exception objEx)

 

{

 

 

ErrorHandling.CatchAllExceptions(objEx);

 

}

}

 

 

 

 

Issue facing:

 

When i am selecting the radio button and scrolling down Checked event gets called and slected row gets deselected.

How can i ensure that the radio button which is checked remain same even when i scoll up and down.

I am using Hiearchial DataTemplates with normal DataTemplate that i saw in one of the forums in here. But i have a problem when the items are displayed properly but it is not expanded when clicked on the items. here is the code that i am using to Display two items at present.
The Link that i saw  this way to display can be found here

XAML:

 

 

 

 

 

C# ViewModel

Is there any way to make the Enter key act like the Tab key for navigating between cells in radgridview?

With the ChartView, how can i get/set the zoom and pan values. I figured out the zoom on the actual control, but it doesn't seem to set the correct "zoom" on the "zoom bar". And pan i can't find anywhere.

I'm trying to create a DataForm that uses a RichTextBox as one of the entry fields. My problem comes in when I try to programmatically set the binding of the RichTextBox. Here's what I have:


(Comments is a string variable)

I'm not quite sure what to use for the dependency property - any suggestions?

hi all
i update my dataset . when i exit app and start again my new data is there but when i open database i see new data dont apply.
this is my code :

dBVideoArchiveDataSetArchiveTableTableAdapter.Update(dBVideoArchiveDataSet.ArchiveTable);

 

dBVideoArchiveDataSet.AcceptChanges();

 

radGridView1.Rebind();

thankful.

Hi
     I am currenty developing WPF applications which will consume a wcf data service with works with entity framework 4.1 code first . In WPF application I am using Radgridview and RadDataServiceDataSource

   following the code in XAML page
 
              <telerik:RadDataServiceDataSource Height="100" HorizontalAlignment="Left" Margin="208,242,0,0" Name="radDataServiceDataSource1" VerticalAlignment="Top" Width="100" QueryName="Currency" AutoLoad="True" SubmittingChanges="radDataServiceDataSource1_SubmittingChanges">
            <telerik:RadDataServiceDataSource.DataServiceContext >
                <local:MyBaazaarContext/>
            </telerik:RadDataServiceDataSource.DataServiceContext>
        </telerik:RadDataServiceDataSource>
        <telerik:RadGridView Grid.Row="0" ItemsSource="{Binding DataView, ElementName=radDataServiceDataSource1}" IsBusy="{Binding IsBusy, ElementName=radDataServiceDataSource1}" ShowGroupPanel="False" Name="grdDetails"  />
 
When I am making changes in the gridview an calling   radDataServiceDataSource1.SubmitChanges() nothings getting change.


please Help

Thanks In Advance

hi there,

in row_loaded method, we create a multibinding for background. converter is not called in first run.

-populate table (set binding in row_loaded)

-set background on viewmodel

-converter not called.

-clear table

-populate table (again create binding)

-set background, then it is called.

While in debug, when I checked PropertChanged.Target, in first run it is System.ComponentModel.PropertyChangedEventManager  (doesnt work),
and in the second run, it is Telerik.Windows.Data.WeakEvent.WeakListener<System.ComponentModel.PropertyChangedEventArgs>.


Telerik version : 2011.1.411.40

Hello,

I have a RadTreeView using a templated ItemsSource bound to a node collection in the view model.  I have implemented a search on the tree, and the found node is programmatically selected within the view model (there is no code in the view).  Do you have an example of how to bring the selected node into view using this type of MVVM structure?

Thanks for any help.

I'm drawing polyline objects, and when plotted I'm making them draggable. How can I get the coordinates for each point of the polyline after it's been dragged to a different location on the map?

Update: Figured it out (doh!):

 MapPolygon thePolygon = item as MapPolygon;
                if (thePolygon != null)
                {
                    int pointCount = thePolygon.Points.Count - 1;
                    Debug.WriteLine("Number of Points: "+ pointCount);
                }

                Location[] locArray = thePolygon.Points.ToArray();

                foreach(Location loc in locArray)
                {
                    Debug.WriteLine("" + loc.Latitude.ToString());
                    Debug.WriteLine("" + loc.Longitude.ToString());
                }