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GridViewComboBoxColumn not selecting previously saved value

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spam asked on 30 Jul 2013, 12:50 AM

I have a grid w/ a combobox in the first column. If I exclude SelectedValueMemberPath="ID", the default value doesn't get chosen when I load up the grid BUT the comboBOx is populated. If I include SelectedValueMemberPath="ID" in the xaml, the same thing happens except after a i select a value in the column, if i click on another column, the value in the combobox dissappears & the combobox is blanked. Forcing me to reselect.

Can someone please provide an answer to this problem or an example project that has a telerik
grid w/ a comobox that allows me to save the combox value and reopen the grid w/ the saved value selected?

I've been working on this 5 days now. :(

Thank you kindly.

PS: I should also mention, the values in the combobox come from 2 tables & combines. One of them doesn't have IDs so I generate unique interger IDs in C# when the value data is loaded. The value generated are consistent each time & not random.

<telerikGridView:RadGridView Name="grdSortSequence" IsReadOnly="False"

VerticalAlignment="Stretch"

ItemsSource="{Binding SortSequenceLines, Mode=TwoWay}"

SelectedItem="{Binding SelectedSequenceLine, Mode=TwoWay}"

AutoGenerateColumns="False"

IsFilteringAllowed="False"

RowIndicatorVisibility="Collapsed"

ShowGroupPanel="False"

CanUserDeleteRows="True"

Margin="2"

MinHeight="150" MaxHeight="200"

Grid.Column="0" Grid.ColumnSpan="2" Grid.Row="6" Width="400" Height="160">

<telerikGridView:RadGridView.Columns>

<telerikGridView:GridViewComboBoxColumn Header="ChangeAttributeTo" UniqueName="AttributeName" Width="120" ValidatesOnDataErrors="None"

DataMemberBinding="{Binding Attribute, Mode=TwoWay}"

DisplayMemberPath="Name"

SelectedValueMemberPath="ID"/>

<telerikGridView:GridViewDataColumn x:Name="txtAttribute"

Header="Attribute"

Background="Silver"

IsReadOnly="True"

DataMemberBinding="{Binding AttributeName, Mode=TwoWay}"

UniqueName="AttributeName" />

<telerikGridView:GridViewDataColumn x:Name="txtLength"

Header="Length"

DataMemberBinding="{Binding Length, Mode=TwoWay}"

UniqueName="Length" />

<telerikGridView:GridViewDataColumn x:Name="chkIsDescending"

Header="Descending"

DataMemberBinding="{Binding IsDescending, Mode=TwoWay}"

UniqueName="Descending" />

<telerikGridView:GridViewDataColumn x:Name="txtSequence"

Header="Sequence"

DataMemberBinding="{Binding SequenceNumber, Mode=TwoWay}"

UniqueName="Name" />

</telerikGridView:RadGridView.Columns>

</telerikGridView:RadGridView>

This is my class that reflex a record in the grid...

public class SequenceLine

{

public GeneralSettings.Module.ViewModels.Attribute Attribute { get; set; }

public string AttributeName { get; set; }

public int ClassCodeGroupID { get; set; }

public int SequenceNumber { get; set; }

public int Length { get; set; }

public Boolean? IsDescending { get; set; }

}

And this is the Attribute class that is in the comboBox.

public class Attribute

{

public int ID { get; set; }

public string Name { get; set; }

}

GridViewComboBoxColumn not selecting previously saved value

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