Telerik blogs

Vladimir Enchev

is Director of Engineering, Native Mobile UI & Frameworks

  • Web

    How To: Custom percentage column with RadGridView, RadProgressBar and RadSlider for Silverlight and WPF

    Creating custom columns for RadGridView is super easy - all you need to do is to override CreateCellElement and/or CreateCellEditElement methods and return desired controls. To illustrate this I’ve made a column with RadProgressBar for view mode and RadSlider for edit mode:   And here is the code: public class GridViewPercentageColumn : GridViewDataColumn { public override FrameworkElement CreateCellElement(GridViewCell cell, object dataItem) { var bar = cell.Content as RadProgressBar; if (bar == null) ...
    by Vladimir Enchev
    May 13, 2010
  • Web

    Blazing fast performance with RadGridView for Silverlight 4, RadDataPager and WCF RIA Services

    In my previous post I’ve used almost 2 million records to the check the grid performance in WPF and I’ve decided to do the same for Silverlight 4 using WCF RIA Services. The grid again is bound completely codeless using DomainDataSource and RadDataPager: <Grid x:Name="LayoutRoot"> <Grid.RowDefinitions> <RowDefinition /> <RowDefinition Height="Auto" /> </Grid.RowDefinitions> <riaControls:DomainDataSource Name="orderDomainDataSource" QueryName="GetOrdersAndOrderDetails"> ...
    by Vladimir Enchev
    April 19, 2010
  • Desktop WPF

    Blazing fast performance with RadGridView for WPF 4.0 and Entity Framework 4.0

    Just before our upcoming release of Q1 2010 SP1 (early next week), I’ve decided to check how RadGridView for WPF will handle complex Entity Framework 4.0 query with almost 2 million records: public class MyDataContext{    IQueryable _Data;    public IQueryable Data    {        get        {            if (_Data == null)            {                var northwindEntities = new NorthwindEntities();                var queryable = from o in northwindEntities.Orders                               from od...
    by Vladimir Enchev
    April 15, 2010
  • Web

    How To: Filter as you type RadGridView inside RadComboBox for WPF and Silverlight

    I’ve made small example on how to place RadGridView inside editable RadComboBox and filter the grid items as you type in the combo:   The easiest way to place any UI element in RadComboBox is to create single RadComboBoxItem and define desired Template: <telerikInput:RadComboBox Text="{Binding Text, Mode=TwoWay}" IsEditable="True" Height="25" Width="200"> <telerikInput:RadComboBox.Items> <telerikInput:RadComboBoxItem> <telerikInput:RadComboBoxItem.Template> ...
    by Vladimir Enchev
    April 09, 2010
  • Desktop WPF

    Conditional styles and templates with RadGridView for Silverlight and WPF

    I’m happy to announce that with our upcoming Q1 2010 Service Pack 1 (middle of April) you will be able to apply conditionally styles and templates for RadGridView easily using DataTemplateSelectors and StyleSelectors for both Silverlight and WPF: You can test the new functionally with our upcoming latest internal build this Friday and in the meantime here is an example: XAML <Grid x:Name="LayoutRoot"> <Grid.Resources> <local:MyStyleSelector x:Key="styleSelector" /> <local:MyDataTemplateSelector x:Key="templateSelector" /> </Grid.Resources> <telerik:RadGridView AutoGenerateColumns="False" ItemsSource="{Binding}" RowStyleSelector="{StaticResource styleSelector}"> <telerik:RadGridView.Columns> ...
    by Vladimir Enchev
    April 01, 2010
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