CODEWITHSUNDEEP
c#wpflistboxcontroltemplate
Safwan
Safwan

Reputation: 171

How to delete a Template on a Button click

i have ControlTemplate, which is used as a resource inside a ListBox, i am trying to delete the template i.e remove it totally from ListBox on a Button click here is the code for template

 <ControlTemplate x:Key="tasktemplate1">
            <Canvas Height="50" Width="850">
                <Label Content="{Binding XPath=task[1]/name}"  Height="30" Width="170" Canvas.Top="10" Canvas.Left="150" Background="LightGray">
                </Label>
                <TextBox Height="30" Width="120" Canvas.Top="10" Canvas.Left="370" Background="AliceBlue"></TextBox>
                <Label Canvas.Left="500" Canvas.Top="10">$</Label>
                <Button Click="deletebuttonclick" Canvas.Top="12" Height="10" Width="30" Canvas.Left="600" ></Button>
            </Canvas>
        </ControlTemplate>

here is the code for ListBox

 <TabItem>
        <Canvas Height="700" Width="850">
            <ListBox  x:Name="listBox" Height="700" Width="850">
                <ListBoxItem DataContext="{Binding Source={StaticResource TaskList}}" Template="{StaticResource tasktemplate1}"/>
            </ListBox>
        </Canvas>
    </TabItem>

and the code behind is for the Button click

    private void deletebuttonclick(object sender,RoutedEventArgs e)
    {
       var r=listBox.FindResource("tasktemplate1");
       listBox.Items.Remove(r);
    }

where am i going wrong,help needed,thanx.

Upvotes: 0

Views: 238

Answers (1)

Rohit Vats
Rohit Vats

Reputation: 81253

ControlTemplate is just visual representation of control that how it will look like.

So, you need to remove the item (ListBoxItem) from the Items collection and not Template. Since templated control is removed, template automatically will be removed.

private void deletebuttonclick(object sender,RoutedEventArgs e)
{
   listBox.Items.RemoveAt(0);
   // listBox.Items.Clear(); OR in case want to clear all listBoxItems, use Clear
}

Upvotes: 1

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