Set Background Color of Wpf Textbox in C# Code

Set background color of WPF Textbox in C# code

textBox1.Background = Brushes.Blue;
textBox1.Foreground = Brushes.Yellow;

WPF Foreground and Background is of type System.Windows.Media.Brush. You can set another color like this:

using System.Windows.Media;

textBox1.Background = Brushes.White;
textBox1.Background = new SolidColorBrush(Colors.White);
textBox1.Background = new SolidColorBrush(Color.FromArgb(0xFF, 0xFF, 0, 0));
textBox1.Background = System.Windows.SystemColors.MenuHighlightBrush;

How to change Background color of TextBox?

You need to use Brushes:

txtStatus.Foreground = Brushes.White;

It contains a lot of colors, though if you want to use aRGB values then you can do it like this:

txtStatus.Foreground = new SolidBrush(Color.FromArgb(255, 0, 0, 255));

Change Background Color for WPF textbox in changed-state

Just use a MultiBinding with the same property twice but have Mode=OneTime on one of the bindings. Like this:

Public Class MVCBackground
    Implements IMultiValueConverter

    Public Function Convert(ByVal values() As Object, ByVal targetType As System.Type, ByVal parameter As Object, ByVal culture As System.Globalization.CultureInfo) As Object Implements System.Windows.Data.IMultiValueConverter.Convert
        Static unchanged As Brush = Brushes.Blue
        Static changed As Brush = Brushes.Red

        If values.Count = 2 Then
            If values(0).Equals(values(1)) Then
                Return unchanged
            Else
                Return changed
            End If
        Else
            Return unchanged
        End If
    End Function

    Public Function ConvertBack(ByVal value As Object, ByVal targetTypes() As System.Type, ByVal parameter As Object, ByVal culture As System.Globalization.CultureInfo) As Object() Implements System.Windows.Data.IMultiValueConverter.ConvertBack
        Throw New NotImplementedException()
    End Function
End Class

And in the xaml:

<TextBox Text="{Binding TestText}">
    <TextBox.Background>
        <MultiBinding Converter="{StaticResource BackgroundConverter}">
            <Binding Path="TestText"    />
            <Binding Path="TestText" Mode="OneTime" />
        </MultiBinding>
    </TextBox.Background>
</TextBox>

No extra properties or logic required and you could probably wrap it all into your own markup extension. Hope that helps.

WPF. Change Background color TextBlock if text in TextBlock is equal text in ComboBox

I did it so way:

<Border BorderBrush="#FF757576" BorderThickness="0, 0, 0, 1">
    <StackPanel x:Name="StackPanelDevice" Orientation="Horizontal" >
        <TextBlock  Text="{Binding Path=DeviceName}" HorizontalAlignment="Left" Width="200" >
            <TextBlock.Style>
                <Style>
                    <Style.Triggers>                                                               
                        <DataTrigger Value="True">
                            <DataTrigger.Binding>
                                <MultiBinding Converter="{StaticResource multiValueEqualityConverter}">
                                    <Binding  ElementName="ComboBoxModels" Path="SelectedValue"/>
                                    <Binding  Path="DeviceName"/>
                                </MultiBinding>
                            </DataTrigger.Binding>
                       <Setter Property="TextBlock.Background" Value="Red"/>
                   </DataTrigger>
               </Style.Triggers>
           </Style>
       </TextBlock.Style>      
    </TextBlock>
    <TextBlock  Text="{Binding Path=Count}" HorizontalAlignment="Right" Width="30" />
  </StackPanel>
 </Border>  

want to change background of textbox based on the input of another textbox wpf

I am sharing a sample by trigger . With Converter you can pass the parameters with Element Name property as well.

 <StackPanel>
        <TextBlock Height="20" Name="colorTb" >
            <TextBlock.Style>
                <Style TargetType="TextBlock">
                    <Setter Property="Background" Value="Red"></Setter>
                    <Style.Triggers>
                        <DataTrigger Binding="{Binding ElementName=textTb, Path=Text}" Value="Process">
                            <Setter Property="Background" Value="Green"></Setter>
                        </DataTrigger>
                    </Style.Triggers>
                </Style>
            </TextBlock.Style>
        </TextBlock>
        <TextBox Height="20" Name="textTb" Text="xyz" >

        </TextBox>
    </StackPanel>

This is with converter

<StackPanel>
    <StackPanel.Resources>
        <converters:ColorConverter x:Key="converter1"></converters:ColorConverter>
    </StackPanel.Resources>
    <TextBox Height="20" Name="colorTb" Background="{Binding ElementName=textTb, Path=Text ,Converter={StaticResource converter1}}" >

    </TextBox>
    <TextBox Height="20" Name="textTb" Text="xyz" >

    </TextBox>
</StackPanel>

And Converter Code Be like

public class ColorConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        var backColor = Brushes.Transparent;
        if (value!=null && value.ToString().Equals("Process"))
        {
            backColor = Brushes.Green;
        }
        return backColor;
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}

How to change TextBox's Background color?

If it's WPF, there is a collection of colors in the static class Brushes.

TextBox.Background = Brushes.Red;

Of course, you can create your own brush if you want.

LinearGradientBrush myBrush = new LinearGradientBrush();
myBrush.GradientStops.Add(new GradientStop(Colors.Yellow, 0.0));
myBrush.GradientStops.Add(new GradientStop(Colors.Orange, 0.5));
myBrush.GradientStops.Add(new GradientStop(Colors.Red, 1.0));
TextBox.Background = myBrush;

WPF set Textbox Border color from C# code

textBox.BorderBrush = System.Windows.Media.Brushes.Red;

Works for me, make sure you're not using the System.Drawing.Brushes, you need to use the Windows.Media brush instead.

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