五种画刷

1、线性画刷

 <Rectangle Width="60" Height="60" >
                <Rectangle.Fill>
                    <LinearGradientBrush StartPoint="0,0" EndPoint="1,0">
                        <GradientStopCollection>
                            <GradientStop Color="Red" Offset="0" ></GradientStop>
                            <GradientStop Color="Blue" Offset="0.25" ></GradientStop>
                            <GradientStop Color="Yellow" Offset="0.5" ></GradientStop>
                            <GradientStop Color="Black" Offset="1" ></GradientStop>
                        </GradientStopCollection>
                    </LinearGradientBrush>
                </Rectangle.Fill>
            </Rectangle>
           
            <TextBlock Text="我是小沈阳啊甚是沈阳的沈" FontSize="20" Loaded="TextBlock_Loaded_1" >
                <TextBlock.Foreground>
                    <LinearGradientBrush StartPoint="0,0" EndPoint="1,0">
                        <GradientStopCollection>
                            <GradientStop Color="Red" Offset="0" ></GradientStop>
                            <GradientStop Color="Yellow" Offset="0" x:Name="gradientStopColor"></GradientStop>
                            <GradientStop Color="Red" Offset="1"></GradientStop>
                        </GradientStopCollection>
                    </LinearGradientBrush>
                </TextBlock.Foreground>
            </TextBlock>

效果

 <TextBox Background="Red" Height="50" Width="100">
            <TextBox.OpacityMask>
                <LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
                    <GradientStop Color="Red" Offset="0">  </GradientStop>
                    <GradientStop Color="Red" Offset="0.5"></GradientStop>
                    <GradientStop Color="Transparent" Offset="1"></GradientStop>
                </LinearGradientBrush>
            </TextBox.OpacityMask>
        </TextBox>

2、SolidBrush

 <TextBlock Text="我们都是" FontSize="20" x:Name="txtText">
            <TextBlock.Foreground>
                <SolidColorBrush>
                    Red
                </SolidColorBrush>
            </TextBlock.Foreground>
        </TextBlock>

3、径向画刷

<Rectangle Width="100" Height="100">
                <Rectangle.Fill >
                    <RadialGradientBrush GradientOrigin="0.5,0.5"  >
                        <GradientStop Color="Red" Offset="0"></GradientStop>
                        <GradientStop Color="Yellow" Offset="0.5"></GradientStop>
                        <GradientStop Color="blue" Offset="1"></GradientStop>
                    </RadialGradientBrush>
                </Rectangle.Fill>
            </Rectangle>