AutoCompleteBox TextBoxStyle

[Matthias]

Hi,

when I override the TextBoxStyle of the RadAutoCompleteBox with my own styledTextBox (according to this suggestion), it results in wired behavior. When I enter the first character the SearchText binding fires twice with empty string. All following keyboard hits trigger the binding once but still with an empty string. The control however displays all entered characters except the first one.

Here's the custom style:

<Style x:Key="customStyle" TargetType="telerik:RadWatermarkTextBox">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="telerik:RadWatermarkTextBox">
                <TextBox Text="{Binding SearchText, RelativeSource={RelativeSource AncestorType=telerik:RadAutoCompleteBox}, Mode=TwoWay}" />
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

and the control itself:

<telerik:RadAutoCompleteBox
    ItemsSource="{Binding CustomerSearchProvider}"
    SelectedItem="{Binding CustomerSearchProvider.Selected, Mode=TwoWay}"
    SearchText="{Binding CustomerSearchProvider.SearchTerm, Mode=TwoWay}"
    IsDropDownOpen="{Binding CustomerSearchProvider.IsCompleted}"
    DisplayMemberPath="DisplayName"
    TextSearchMode="Contains"
    SelectionMode="Single"
    TextBoxStyle="{StaticResource customStyle}">

When I remove the TextBoxStyle, everything works as expected.

Thanks

Matthias

[Yana]

Hi Matthias,

The reason for the erroneous behavior is that the used template for RadWatermarkTextBox is incomplete - some required parts are missing in order for the the control to work properly.  You should copy the default TextBoxStyle according to the used theme and made the needed changes inside it. Please take a look at the Editing Control Templates topic for more details on the approach.

Regards,
Yana
Telerik

[Matthias]

Thanks Yana, that worked.

Regards,
Matthias