GeographicToLogical gives us value from 0 to 1. I am using this method to project the points using Mercator projection but I want the result in meters. How can we convert the 0-1 value to meters?

How to calculate area enclosed by MapPolygon?

Hello,

   I'm using the telerik Radgrid in our project, which is used to display search result of data having more than 20000 rows and the data rebind to the grid every time the user change the search criteria and click on search button.

As the data binded to the grid is too much, I have implemented VirtualQueryableCollectionView, to overcome the performance issues while loading.

Everything works fine, when the grid get loaded for the first time, but after loading if I scroll down to some far point let's say in middle
and never move the scroller again and search again by changing the search criteria (which will return the less no. of rows for eg. 5 or 6)
then in that case the ItemsLoading event of VirtualQueryableCollectionView fires and even the data loads to the grid but the rows are not visible to the user, it seems as if no data has been loaded in the grid.

But actually the data got binded, and if I use my mouse cursor to scroll (though their is no scroll bar) the rows become visible and which seems to be abnormal behavior of the grid.

The similar issue is already posted in the forum, but in that thread their is no response from the Telerik Team for solution. ( Link for Ref. http://www.telerik.com/community/forums/wpf/gridview/radgridview-with-virtualqueryablecollectionview-loaded-via-wcf-problem.aspx )

I have added code snippets for your reference, showing how I am defining the grid and binding it.

Please revert back as soon as possible.

Thanks
Ramnadh

 

I have implemented a "Property Editor" style control for our application that utilizes a RadGridView.  By utilizing standard and custom .NET attributes, we allow for custom editing of properties from any user-configurable object within our product.  The user is also able to display properties alphabetically or by category.  I implement editing by creating a custom column type that inherits from GridViewDataColumn and overrides the CreateCellEditElement method.

The RadGridView has really served us nicely in this respect.  Recently, a request was made to support "Password" class properties.  Implementing the editor was trivial using the PasswordBox control.  However, I'm running into issues when trying to mask the password's value when not in edit mode.

Currently, I have defined a style that sets the Foreground font color to "Transparent" if the editor type is "Password":


This style is then utilized by the custom column class (inherited from GridViewDataColumn):


This works well, but it's not was I would like to do.  By setting the foreground font color, it gives the impression to the user that their entry was not accepted by the program.  I would really like to mask the password with a character in the cell similar to what the PasswordBox control does.  When I attempt to set the ContentTemplate with a control (TextBlock or PasswordBox), I loose the ability to edit the cell's contents.  The row will go into edit mode, but the edit control is not displayed even though the CreateCellEditElement method is being executed.

What's the best way to implement such a method of data masking?

...Glenn

Hello everyone,

There has to be a way to do this.
Problems

1. What I am trying to do it bind a list<Objects> to a series to have multiple series on the chart show. But there will be an unknown amount of Series each time so I can't hard code everything series mapping. Is there a way to have one series mapping definition set and bind a collections of objects to it?

2. After I have the series mapping done I am looking to do some simple filtering through the chart legend. Would there be a way to do this with the none hard-coded series mappings?

Please help

Thank you 

Hello Telerik,

Is it possible to do a drag and drop operation on a GridViewGroupRow ? I am trying but some how drag does not start.
             Do you have any sample for that ? I am doing a college project and need it a bit urgently to demonstrate in my class

I have Telerik RadTreeListView

<

telerik:RadTreeListView x:Name="treeListView" AutoGenerateColumns="False">

 

<telerik:RadTreeListView.ChildTableDefinitions>

 

<telerik:TreeListViewTableDefinition ItemsSource="{Binding SubFolders}" />

 

</telerik:RadTreeListView.ChildTableDefinitions>

 

<telerik:RadTreeListView.Columns>
<telerik:GridViewDataColumn Header="Folder/File Name" Width="408" IsReadOnly="True" IsSortable="True" IsFilterable="False" HeaderTextAlignment = "Center" TextAlignment="Left">

 

<telerik:GridViewDataColumn.CellTemplate>

 

<DataTemplate>

 

<StackPanel Orientation="Horizontal">

 

<Image Source="{Binding FileorFolderPath}"/>

 

<TextBlock Text="{Binding FolderName}" Margin="5" MouseUp="editcell_MouseLeftButtonUp"/>

 

</StackPanel>

 

</DataTemplate>

 

</telerik:GridViewDataColumn.CellTemplate>

 

</telerik:GridViewDataColumn><telerik:GridViewDataColumn DataMemberBinding="{Binding Date, StringFormat=\{0:dd-MMM-yyyy\}}" Header="Date" IsReadOnly="True" Width="140" HeaderTextAlignment = "Center" IsSortable="True" IsFilterable="False" TextAlignment="Center" />

 

<

telerik:GridViewDataColumn DataMemberBinding="{Binding Count}" Header="Version" IsReadOnly="True" Width="70" HeaderTextAlignment = "Center" IsSortable="False" IsFilterable="False" TextAlignment="Center" />
</telerik:RadTreeListView.Columns>
</telerik:RadTreeListView>
For alternate Rows i like to Apply different Baground Color How Can i Do ?
Help me out as soon as possible....

 

I am using hierachial example , but I populate the data in viewmodel only after the treeview has been load.

sequnce of events _treeview loaded , then getdata from database and assisgn the value to the property.

if I want to GetItemByPath what event should I listen to before I start using the method.  

Hi..

I am using Telerik Rad Wpf grid.

I want to disable some records by binding with linq entities.

Suppose I have an entity named Title which has an active field. I have below converter which is mentioned in Resources.

 

<

 

 

my:UserControl.Resources>

 

 

 

 

 

 

 

 

<my1:BooleanConverter x:Key="RowEnableConverter"/>

 

 

 

 

 

 

 

 

</my:UserControl.Resources>

 

 

 

 

And in Grid control , there is a datacolumn.

 

<

 

 

telerik:GridViewDataColumn Header="Document Name" DataMemberBinding="{Binding DOCUMENTDSC, UpdateSourceTrigger=PropertyChanged}" Width="1.5*" IsFilterable="False" IsEnabled="{Binding ACTIVE,Converter={StaticResource RowEnableConverter}, UpdateSourceTrigger=PropertyChanged}" />

 

 

 

 

Now please see the below example:

1           Ahmed        25

2           Ali               35

3          Maifs           25

Now  i  want to disable/readonly 2nd record which is

2           Ali               35.

How would i ?
Suggest please.