How Dow I Create An Itemtemplate For Combobox?

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C#

WPF

C#4.0

C#

hi there. i have following XAML code:

XML

<ComboBox x:Name="MainComboBox" Height="35" Width="250" removed="WhiteSmoke" BorderBrush="Gray"
                  IsEditable="True" TextSearch.TextPath="Name" TextBoxBase.TextChanged="MainComboBox_TextChanged">
            <ComboBox.Resources>
                <SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="Transparent"/>
                <SolidColorBrush x:Key="{x:Static SystemColors.ControlBrushKey}" Color="Transparent"/>
            </ComboBox.Resources>
            <ComboBox.ItemTemplate>
                <DataTemplate>
                    <TreeView BorderBrush="Transparent" BorderThickness="0" ItemsSource="{Binding RelativeSource={RelativeSource AncestorType={x:Type ComboBox}, Mode=FindAncestor}, Path=ItemsSource}">
                        <TreeView.ItemTemplate>
                            <HierarchicalDataTemplate ItemsSource="{Binding Children}" DataType="{x:Type data:SubscriberGroupModel}">
                                <CheckBox Content="{Binding Name}" Height="25" Width="80" />
                            </HierarchicalDataTemplate>
                        </TreeView.ItemTemplate>
                    </TreeView>
                </DataTemplate>
            </ComboBox.ItemTemplate>
        </ComboBox>

and my code behind:

C#

private void Window_Loaded(object sender, RoutedEventArgs e)
{
    List<SubscriberGroupModel> list = SubscriberGroupDB.GetCustomSubscriberGroup();
    MainComboBox.ItemsSource = list;
}

this control doesn't work properly because it produces itms more than once.
my query s correct.
please help me.
thanks alot

Posted 26-Jan-14 20:53pm

aliwpf

Updated 26-Jan-14 20:57pm

v2

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Comments

AnthonyMG 27-Jan-14 4:14am

could you please let me know what your trying to achieve with this combobox,
can you specify your need of combobox using ItemTemplate ?

aliwpf 27-Jan-14 4:27am

No

1 solution

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Punamchand Dhuppad · Answer 1 · 2014-01-29T01:08:00

Hey Ali, Please follow these steps. I check this on my side and it works..

1) Add Childern as one more property in SubscriberGroupModel class. It means -

C#

List<Subscribergroupmodel> childern;
public List<Subscribergroupmodel> Childern
{
  get { return childern; }
  set
  {
      childern = value;
      NotifyPropertyChanged("Childern");
   }
}

2)After that change the Loaded method - (Window_Loaded)

C#

private void Window_Loaded(object sender, RoutedEventArgs e)
 {
    List<Subscribergroupmodel> list = SubscriberGroupDB.GetCustomSubscriberGroup();
    SubscriberGroupModel sgmobj = new SubscriberGroupModel();
    sgmobj.Childern = list;

    List<Subscribergroupmodel> obj = new List<Subscribergroupmodel>();
    obj.Add(sgmobj);

    MainComboBox.ItemsSource = obj;

  }

3) And Lastly change in your XAML -

HTML

<ComboBox x:Name="MainComboBox" TextBoxBase.TextChanged="MainComboBox_TextChanged">           
     <ComboBox.ItemTemplate>
         <DataTemplate>
             <TreeView BorderBrush="Transparent" BorderThickness="0" ItemsSource="{Binding Childern}">
                  <TreeView.ItemTemplate>
                       <HierarchicalDataTemplate >
                            <CheckBox Content="{Binding Name}" Height="25" Width="80" />
                        </HierarchicalDataTemplate>
                    </TreeView.ItemTemplate>
             </TreeView>
          </DataTemplate>
      </ComboBox.ItemTemplate>
  </ComboBox>

I hope this will solve your problem...