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[Solved] Custom Editor in AutoGeneratingPropertyDefinition Event

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PropertyGrid

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Robert asked on 16 Nov 2012, 10:06 AM

Hi,
Could someone tell me what is changed about RadPropertyGrid in latest version (2012 Q3), because in previous worked fine with dymaically created and loaded datatemplate.

I Created a propertygrid with AutoGeneratingPropertyDefinition = true option.
In Autogeneratingpropertydefinition event I set the EditorTemplate property with
datatemplate.
The datatemplate was generated string builder and loaded XamlReader.Load method.

When a I run the application i got following exception:
Unhandled exception ... Code 404
Category:ManagedRuntimeError
Message: System.Exception:Catastrophic Failure (Exception from HRESULLT:0x8000FFFF (E_UNEXPECTED))

I note again my test app in previous version its worked fine.

Thanks!

9 Answers, 1 is accepted

answered on 21 Nov 2012, 09:07 PM

Hi Ivan,
Thanks your help!
Here's my test usercontrol:
XAML code:

<UserControl x:Class="User.Test"
	xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
	xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
	xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
	xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
	xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
	xmlns:local="clr-namespace:User"
    xmlns:mycombo="clr-namespace:User"
	mc:Ignorable="d"
			 x:Name="LayoutRoot"
	d:DesignHeight="300" d:DesignWidth="400">
	
			
	<Grid  Background="White">
		<Grid.RowDefinitions>
			<RowDefinition></RowDefinition>
			<RowDefinition></RowDefinition>
		</Grid.RowDefinitions>
        <telerik:RadPropertyGrid  Grid.Row="0" x:Name="partParamGrid" Width="500" MaxHeight="500" 
                                  AutoGeneratePropertyDefinitions="True"    
		                          ScrollViewer.VerticalScrollBarVisibility="Auto" 
                                  ScrollViewer.HorizontalScrollBarVisibility="Hidden" Item="{Binding Path=DctxData, Mode=TwoWay}" 
			        LabelColumnWidth="200" AutoGeneratingPropertyDefinition="partParamGrid_AutoGeneratingPropertyDefinition"  >
        </telerik:RadPropertyGrid>
       
	</Grid>
</UserControl>


and codebehind:



using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
using System.ComponentModel;
using System.Text;
using System.Windows.Markup;
 
namespace User
{
    public partial class Test : UserControl
    {
        public Test()
        {
            InitializeComponent();
            Loaded += new RoutedEventHandler(Test_Loaded);
        }
 
        public Data DctxData { get; set; }
 
        public  List<LookUpData> Look { get; set; }
   
        void Test_Loaded(object sender, RoutedEventArgs e)
        {
 
            DctxData = new Data() { A = 1, B = "Something text", C = true };
 
            Look = new List<LookUpData>();
            Look.Add(new LookUpData() { Key = 1, Value = "FirstValue" });
            Look.Add(new LookUpData() { Key = 2, Value = "SecondValue" });
 
            DataContext = this;
 
        }
 
        private void partParamGrid_AutoGeneratingPropertyDefinition(object sender, Telerik.Windows.Controls.Data.PropertyGrid.AutoGeneratingPropertyDefinitionEventArgs e)
        {
                if (e.PropertyDefinition.DisplayName=="A")
                e.PropertyDefinition.EditorTemplate = CreateComboTemplate("A");
                e.Cancel = false;
 
        }
 
     
            private DataTemplate CreateComboTemplate(string tag)
        {
            var sb = new StringBuilder();
            sb.Append("<DataTemplate ");
            sb.Append("xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation' ");
            sb.Append("xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml' ");
            sb.Append(" xmlns:propGrid='clr-namespace:Telerik.Windows.Controls.Data.PropertyGrid;assembly=Telerik.Windows.Controls.Data' ");
            sb.Append(" xmlns:telerik='http://schemas.telerik.com/2008/xaml/presentation'>");
 
            sb.Append("<Grid>");
            sb.Append("<telerik:RadComboBox x:Name=\"");
            sb.Append(tag);
            sb.Append("\" DisplayMemberPath=\"Value\" SelectedValuePath=\"Key\" ");
            sb.Append("SelectedValue=\"{Binding Path=");
            sb.Append(tag);
            sb.Append(",Mode=TwoWay}\" ");
            sb.Append(" propGrid:AutoBindBehavior.UpdateBindingOnElementLoaded=\"SelectedValue\" ");
            sb.Append(" ItemsSource=\"{Binding  Path=DataContext.Look, RelativeSource={RelativeSource FindAncestor,AncestorType=telerik:RadPropertyGrid,AncestorLevel=1}}\" >");
            sb.Append("</telerik:RadComboBox>");
            sb.Append("</Grid>");
            sb.Append("</DataTemplate>");
 
            DataTemplate dt = (DataTemplate)XamlReader.Load(sb.ToString());
 
            return dt;
        }
 
     
    }
 
 
 
 
    public class Data : INotifyPropertyChanged
    {
        private int a;
 
        public int A
        {
            get { return a; }
            set
            {
                a = value;
                NotifyChanged("A");
            }
        }
 
        private string b;
 
        public string B
        {
            get { return b; }
            set
            {
                b = value;
                NotifyChanged("B");
            }
        }
 
        private bool c;
 
        public bool C
        {
            get { return c; }
            set
            {
                c = value;
                NotifyChanged("C");
            }
        }
 
 
        public event PropertyChangedEventHandler PropertyChanged;
        public void NotifyChanged(string prop)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(prop));
            }
        }
 
    }
 
 
 
    public class LookUpData
    {
        public int Key { get; set; }
        public string Value { get; set; }
 
    }
 
 
 
}


Best regard,

Robert