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GeneralRe: Shape Designer Pin
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GeneralRe: Shape Designer Pin
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GeneralRe: Shape Designer Pin
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GeneralRe: Shape Designer Pin
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GeneralRe: Shape Designer Pin
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GeneralRe: Shape Designer Pin
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AnswerRe: Shape Designer Pin
Pete O'Hanlon24-Aug-17 22:07
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Questiondatagrid multiple selected items Pin
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AnswerRe: datagrid multiple selected items Pin
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QuestionComboBox Items Not Showing Up Pin
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GeneralRe: ComboBox Items Not Showing Up Pin
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GeneralRe: ComboBox Items Not Showing Up Pin
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QuestionListBox Style Problem Pin
Kevin Marois27-Jul-17 6:53
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AnswerRe: ListBox Style Problem Pin
Henrik Jonsson7-Aug-17 9:35
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QuestionStyle Not being Applied Pin
Kevin Marois24-Jul-17 7:43
professionalKevin Marois24-Jul-17 7:43 
I'm trying to create a simple Watermark TextBox. I first created a TextBox class with a WatermarkText property:
public class MaroisTextBox : TextBox
{
    #region DP WatermarkText
    public static readonly DependencyProperty WatermarkTextProperty =
                DependencyProperty.Register("WatermarkText",
                typeof(string),
                typeof(MaroisTextBox),
                new PropertyMetadata("", new PropertyChangedCallback(OnWatermarkTextChanged)));

    public string WatermarkText
    {
        get { return (string)GetValue(WatermarkTextProperty); }
        set { SetValue(WatermarkTextProperty, value); }
    }

    private static void OnWatermarkTextChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
    {
        MaroisTextBox control = (MaroisTextBox)d;

        control.SetWatermark();
    }
    #endregion

    #region Overrides
    protected override void OnGotFocus(RoutedEventArgs e)
    {
        base.OnGotFocus(e);

        SetWatermark();
    }

    protected override void OnLostFocus(RoutedEventArgs e)
    {
        base.OnLostFocus(e);

        SetWatermark();
    }
    #endregion

    private void SetWatermark()
    {
        if (IsFocused)
        {
            // If the watermark is showing, remove it
            if (Text.CompareTo(WatermarkText) == 0)
            {
                Text = string.Empty;
            }
        }
        else
        {
            // If the Text property is empty then appply the watermark
            if (string.IsNullOrEmpty(Text))
            {
                Text = WatermarkText;
            }
        }
    }
}

Next I created a style for it
<Style x:Key="SearchTextBoxStyle"
        TargetType="TextBox">

<pre>
<Setter Property="FontFamily" Value="{StaticResource AppFontName}"/>
<Setter Property="FontSize" Value="{StaticResource NormalFontSize}"/>
<Setter Property="FontStyle" Value="Normal"/>
<Setter Property="Foreground" Value="Black"/>
<Setter Property="HorizontalAlignment" Value="Left"/>
<Setter Property="VerticalAlignment" Value="Center"/>
<Setter Property="Margin" Value="2"/>
<Setter Property="Height" Value="30"/>

<Style.Triggers>
    <Trigger Property="IsFocused" Value="True">

        <Setter Property="Foreground" Value="Red"/>
        <Setter Property="FontStyle" Value="Italic"/>

    </Trigger>
</Style.Triggers>




And its usage
<MaroisTextBox Grid.Column="3"
                    Width="200"
                    Margin="20,2,2,2"
                    Text="{Binding SearchText}"
                    WatermarkText="Search..."
                    Style="{StaticResource SearchTextBoxStyle}"/>

When I click into the textbox, the code behind runs as expected. Yet I don't see anything in the textbox.

When I click out, the watermark text appears, but in black and not italic.

I don't see why this won't work. Anyone see what's wrong here?

Thanks
If it's not broken, fix it until it is.
Everything makes sense in someone's mind.
Ya can't fix stupid.

AnswerRe: Style Not being Applied Pin
Richard Deeming24-Jul-17 7:54
mveRichard Deeming24-Jul-17 7:54 
GeneralRe: Style Not being Applied Pin
Kevin Marois24-Jul-17 10:17
professionalKevin Marois24-Jul-17 10:17 
GeneralRe: Style Not being Applied Pin
Richard Deeming25-Jul-17 0:37
mveRichard Deeming25-Jul-17 0:37 
GeneralRe: Style Not being Applied Pin
Kevin Marois25-Jul-17 4:36
professionalKevin Marois25-Jul-17 4:36 

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