DataField watermark text localization

[Andrzej]

Hi,
I've just installed trial of Windows Phone Controls. I'm trying to use localized string in watermark of DataField.
Here is XAML from your template:

<telerikInput:RadDataForm Grid.Row="1" Margin="12,48,12,0" x:Name="DataForm">
    <telerikInput:RadDataForm.CurrentItem>
        <models:SignInDataModel/>
    </telerikInput:RadDataForm.CurrentItem>
    <Grid>
        <telerikInput:DataField Header="" TargetProperty="UserName">
            <telerikInput:DataField.EditorStyles>
                <Style TargetType="telerikPrimitives:RadTextBox">
                    <Setter Property="Watermark" Value="login"/>
                </Style>
            </telerikInput:DataField.EditorStyles>
            <telerikInput:DataField.Validators>
                <telerikInput:NonEmptyStringValidator/>
            </telerikInput:DataField.Validators>
        </telerikInput:DataField>
        <telerikInput:DataField Header="" TargetProperty="Password" telerikDataForm:PasswordField.IsPasswordField="True">
            <telerikInput:DataField.EditorStyles>
                <Style TargetType="telerikPrimitives:RadPasswordBox">
                    <Setter Property="Watermark" Value="password"/>
                </Style>
            </telerikInput:DataField.EditorStyles>
            <telerikInput:DataField.Validators>
                <telerikInput:NonEmptyStringValidator/>
            </telerikInput:DataField.Validators>
        </telerikInput:DataField>
    </Grid>
</telerikInput:RadDataForm>

I'm trying to localize:

<Setter Property="Watermark" Value="login"/>

and

<Setter Property="Watermark" Value="password"/>

But when I'm trygin to do something like this:

<Setter Property="Watermark" Value="{Binding Source={StaticResource LocalizedStrings}, Path=AppResources.Login}"/>

I've got an exception:

ArgumentException: Value does not fall within the expected range.

I think it's because in XAML I can't use "Binding" in "Value" attribute of style setter in this place.
What are best practices to localize watermarks in such places?

[Todor]

Hello Andrzej,

Thank you for your interest in RadDataForm.

Your guess is right, you are not able to use binding in setters. The proper approach in this scenario would be to use RadTextBox as a custom editor. In your case that is:

<telerikInput:DataField Header="" TargetProperty="UserName">

    <telerikInput:DataField.CustomEditor>
        <telerikDataForm:CustomEditor>
            <telerikPrimitives:RadTextBox
                        Watermark="{Binding Source={StaticResource LocalizedStrings}, Path=AppResources.Login}" telerikDataForm:CustomDataField.IsEditor="True" telerikDataForm:CustomDataField.EditorValuePath="Text" />
            </telerikDataForm:CustomEditor>
        </telerikInput:DataField.CustomEditor>

    <telerikInput:DataField.Validators>
        <telerikInput:NonEmptyStringValidator/>
    </telerikInput:DataField.Validators>

</telerikInput:DataField>

I hope this information helps. Let us know if you need further assistance.

Regards,
Todor
Telerik

 

 

[Daniil]

Hello Todor,

I've used RadTextBox with CustomEditor and get an exception while property dataForm:CustomDataField.IsEditor equals "True" in the following context:

<telerikInput:RadDataForm Grid.Row="0" Margin="12,48,12,0" x:Name="SignInDataForm">

    <telerikInput:RadDataForm.CurrentItem>

        <models:SignInDataModel/>

    </telerikInput:RadDataForm.CurrentItem>

    <Grid>

        <telerikInput:DataField Header="" TargetProperty="Email" >

            <telerikInput:DataField.CustomEditor>

                <dataForm:CustomEditor>

                    <telerikPrimitives:RadTextBox Watermark="{Binding Path=LocalizedResources.EmailAddress, Source={StaticResource LocalizedStrings}}" Style="{StaticResource TextBoxMulticolorStyle}"

                                                  InputScope="EmailNameOrAddress" dataForm:CustomDataField.EditorValuePath="Text" />

                </dataForm:CustomEditor>

            </telerikInput:DataField.CustomEditor>

            <telerikInput:DataField.Validators>

                <telerikInput:NonEmptyStringValidator/>

                <telerikInput:EmailValidator/>

            </telerikInput:DataField.Validators>

        </telerikInput:DataField>

        <telerikInput:DataField Header="" TargetProperty="Password" dataForm:PasswordField.IsPasswordField="True">

            <telerikInput:DataField.CustomEditor>

                <dataForm:CustomEditor>

                    <telerikPrimitives:RadPasswordBox Watermark="{Binding Path=LocalizedResources.Password, Source={StaticResource LocalizedStrings}}" Style="{StaticResource MulticolorRadPasswordBoxStyle}"

                                                      dataForm:CustomDataField.IsEditor="True" dataForm:CustomDataField.EditorValuePath="Password" />

                </dataForm:CustomEditor>

            </telerikInput:DataField.CustomEditor>

            <telerikInput:DataField.Validators>

                <telerikInput:NonEmptyStringValidator/>

                <helpers:MinLengthValidator/>

            </telerikInput:DataField.Validators>

        </telerikInput:DataField>

    </Grid>

</telerikInput:RadDataForm>

[Daniil]

ArgumentException: Value does not fall within the expected range.

 is suited in the case of

<telerikInput:DataField.CustomEditor>
    <dataForm:CustomEditor>
        <telerikPrimitives:RadTextBox Watermark="{Binding Path=LocalizedResources.EmailAddress, Source={StaticResource LocalizedStrings}}" Style="{StaticResource TextBoxMulticolorStyle}"
                                      InputScope="EmailNameOrAddress" dataForm:CustomDataField.IsEditor="True" dataForm:CustomDataField.EditorValuePath="Text" />
    </dataForm:CustomEditor>
</telerikInput:DataField.CustomEditor>

[Rosy Topchiyska]

Hello Daniil,

Thank you for writing.

The RadTextBox and RadPasswordBox do not support null values. If you initialize the properties of your business object with string.Empty, you should not get this exception.

I hope this helps. Please, let us know if you have further questions.

Regards,
Rosy Topchiyska
Telerik

 

 

[Daniil]

Hello Rosy,

Thank you for answer, it resolves my problem.