Populate by code

[Louis Bouchard]

Hello,

I got a RadCombobox in a DataForm and I just want to populate it with 1, 2 ,3 and so on.  Where I can do it (event) and how (code).

Thank you.

[Louis Bouchard]

OK I find this to populate my ComboBox :

<telerikInput:RadComboBox Name="ComboBoxQty" SelectedValue="{Binding Quantity, Mode=TwoWay}" SelectedValuePath="Qty"  Width="100" Height="25" DisplayMemberPath="????" ItemsSource="????" >
   <telerikInput:RadComboBoxItem Content="1" />
   <telerikInput:RadComboBoxItem Content="2" />
   <telerikInput:RadComboBoxItem Content="3" />
</telerikInput:RadComboBox>

1) But what I have to do with the DisplayMemberPath?
2) Do I have to do something with the ItemsSource?

For now my DataForm is not updated when I select an item in my RadComboBox.

[Louis Bouchard]

Ok now my DataForm is updated
 
I  got only 1 problem.

The Combobox update my field but when I save my DataForm the value selected disappear in the ComboBox (display nothing). 

 

 

 

 

<telerik:RadComboBox Name="ComboBoxQty" SelectedValue="{Binding Qty, Mode=TwoWay}" SelectedValuePath="Content" Width="100" Height="25">

 

 

 

<telerik:RadComboBoxItem Content="1" />

 

 

 

<telerik:RadComboBoxItem Content="2" />

 

 

 

<telerik:RadComboBoxItem Content="3" />

 

 

 

<telerik:RadComboBoxItem Content="4" />

 

 

 

<telerik:RadComboBoxItem Content="5" />

 

 

 

</telerik:RadComboBox>

 I try to set DisplayMemberPath with different value like "Content" but nothink work.

 

[Valeri Hristov]

Hello Louis,

The Content property of RadComboBoxItem is of type Object and is not automatically converted to Integer (I suppose that the Qty property is integer), hence RadComboBox is comparing the string "1" to the integer 1 and cannot preselect its items. You could try addung a Converter (IValueConverter) on the SelectedValue Binding that will convert the strings to integers and vice versa.

Other option is to put integers instead of RadComboBoxItems inside RadComboBox (note there is no SelectedValuePath):
<telerik:RadComboBox Name="ComboBoxQty" SelectedValue="{Binding Qty, Mode=TwoWay}" Width="100" Height="25">
<system:Int32>1</system:Int32>
<system:Int32>2</system:Int32>
<system:Int32>3</system:Int32>
</telerik:RadComboBox>

where the system XML namespace is declared like this:

xmlns:system="clr-namespace:System;assembly=mscorlib"

Best wishes,
Valeri Hristov
the Telerik team

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[Louis Bouchard]

Hello Valeri,

Thank you a lot.  It's really helps and it's the more important it's working.  And this link helps me to construct the Converter :

http://blogs.telerik.com/blogs/posts/09-04-29/using_ivalueconverter_to_format_values_in_radcontrols_for_silverlight.aspx

Bye for now and have nice day.