为了实现自定义的Menu和ContextMenu效果，下面演示代码通过派生ProfessionalColorTable类，在自定义的类中重写ProfessionalColorTable类的相关联的属性，从而实现自定义菜单效果。
using System.Drawing; using System.Windows.Forms; public class CustomToolStripColorTable : ProfessionalColorTable { /// <summary> /// 主菜单项被点击后，展开的下拉菜单面板的边框 /// </summary> public override Color MenuBorder { get { return Color.FromArgb(37, 37, 37); } } /// <summary> /// 鼠标移动到菜单项（主菜单及下拉菜单）时，下拉菜单项的边框 /// </summary> public override Color MenuItemBorder { get { return Color.Transparent; } } #region 顶级菜单被选中背景颜色 public override Color MenuItemSelectedGradientBegin { get { return Color.FromArgb(37, 37, 37); } } public override Color MenuItemSelectedGradientEnd { get { return Color.FromArgb(37, 37, 37); } } #endregion #region 顶级菜单被按下是，菜单项背景色 public override Color MenuItemPressedGradientBegin { get { return Color.Black; } } public override Color MenuItemPressedGradientMiddle { get { return Color.FromArgb(37, 37, 37); } } public override Color MenuItemPressedGradientEnd { get { return Color.Black; } } #endregion /// <summary> /// 菜单项被选中时的颜色 /// </summary> public override Color MenuItemSelected { get { return Color.FromArgb(37, 37, 37); } } #region 下拉菜单面板背景设置（不包括下拉菜单项） //下拉菜单面板背景一共分为2个部分，左边为图像区域，右侧为文本区域，需要分别设置 //ToolStripDropDownBackground设置文本部分的背景色 public override Color ToolStripDropDownBackground { get { return Color.Black; } } //以ImageMarginGradient开头的3个设置的是图像部分的背景色，begin->end是从左到右的顺序 public override Color ImageMarginGradientBegin { get { return Color.Black; } } public override Color ImageMarginGradientMiddle { get { return Color.Black; } } public override Color ImageMarginGradientEnd { get { return Color.Black; } } #endregion }
然后对需要实现自定义风格的菜单（如：contextMenuStrip1）应用如下代码：
contextMenuStrip1.RenderMode = ToolStripRenderMode.Professional; contextMenuStrip1.Renderer = new ToolStripProfessionalRenderer(new CustomToolStripColorTable());
ContextMenu的自定义
1.针对整个ContextMenu， 自定义一个Style，去掉竖分割线
<Style x:Key="DataGridColumnsHeaderContextMenuStyle" TargetType="{x:Type ContextMenu}"> <Setter Property="SnapsToDevicePixels" Value="True"/> <Setter Property="Grid.IsSharedSizeScope" Value="true"/> <Setter Property="HasDropShadow" Value="True"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type ContextMenu}"> <Border Uid="Border_93"> <Border.Style> <Style TargetType="{x:Type Border}"> <Setter Property="Tag" Value="{DynamicResource {x:Static SystemParameters.DropShadowKey}}"/> <Style.Triggers> <DataTrigger Binding="{Binding Tag, RelativeSource={RelativeSource Self}}" Value="True"> <Setter Property="Effect"> <Setter.Value> <DropShadowEffect BlurRadius="4" Opacity="0.8" ShadowDepth="1"/> </Setter.Value> </Setter> </DataTrigger> </Style.Triggers> </Style> </Border.Style> <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Uid="Border_50"> <ScrollViewer CanContentScroll="True" Uid="ScrollViewer_9" > <ItemsPresenter KeyboardNavigation.DirectionalNavigation="Cycle" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" Uid="ItemsPresenter_5"/> </ScrollViewer> </Border> </Border> </ControlTemplate> </Setter.Value> </Setter> </Style>
2. 针对其中的ItemContainerStyle来写个MenuItem的control template
<Style x:Key="MenuItemStyle1" TargetType="{x:Type MenuItem}"> <Setter Property="Template" Value="{DynamicResource MenuItemControlTemplate1}"/> <Setter Property="Margin" Value="0"></Setter> <Setter Property="Padding" Value="0"></Setter> </Style> <ControlTemplate x:Key="MenuItemControlTemplate1" TargetType="{x:Type MenuItem}"> <Grid x:Name="grid" SnapsToDevicePixels="True" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" > <ContentPresenter ContentTemplate="{TemplateBinding HeaderTemplate}" Content="{TemplateBinding Header}" Grid.Column="0" ContentStringFormat="{TemplateBinding HeaderStringFormat}" ContentSource="Header" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/> </Grid> <ControlTemplate.Triggers> <Trigger Property="IsHighlighted" Value="True"> <Setter Property="Background" TargetName="grid" Value="{DynamicResource Brush_PA_CSW_ListBoxItemDefaultHighlight}"/> </Trigger> <Trigger Property="IsEnabled" Value="False"> <Setter Property="Foreground" Value="#FF9A9A9A"/> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> 3. contextMenu使用上述style <ContextMenu x:Key="DataGridColumnsHeaderContextMenu" ItemTemplate="{DynamicResource HeaderConfigItemTemplate}" ItemContainerStyle="{DynamicResource MenuItemStyle1}" />
以上就是本文通过C#实现Menu和ContextMenu自定义风格及contextMenu自定义的全部内容，希望大家喜欢。
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