WPF的DataGrid列头和行头相交的单元格怎么修改样式和填充文字

Posted 2023-04-20

参考技术A 　　从可视树种能看出，那个区域只有一个Button 是用来做全选的，所以我们只有通过修改DataGrid的默认模板来实现你的效果：

　　首先看下DataGrid的默认模板：

　　<ControlTemplate TargetType="DataGrid">
　　<Border Background="TemplateBinding Control.Background" BorderBrush="TemplateBinding Control.BorderBrush" BorderThickness="TemplateBinding Control.BorderThickness" Padding="TemplateBinding Control.Padding" SnapsToDevicePixels="True">
　　<ScrollViewer Focusable="False" Name="DG_ScrollViewer">
　　<ScrollViewer.Template>
　　<ControlTemplate TargetType="ScrollViewer">
　　<Grid>
　　<Grid.ColumnDefinitions>
　　<ColumnDefinition Width="Auto" />
　　<ColumnDefinition Width="*" />
　　<ColumnDefinition Width="Auto" />
　　</Grid.ColumnDefinitions>
　　<Grid.RowDefinitions>
　　<RowDefinition Height="Auto" />
　　<RowDefinition Height="*" />
　　<RowDefinition Height="Auto" />
　　</Grid.RowDefinitions>
　　<Button Command="ApplicationCommands.SelectAll" Focusable="False" Style="DynamicResource ComponentResourceKey ResourceId=DataGridSelectAllButtonStyle, TypeInTargetAssembly=DataGrid" Width="Binding Path=CellsPanelHorizontalOffset, RelativeSource=RelativeSource FindAncestor, AncestorLevel=1, AncestorType=DataGrid">
　　<Button.Visibility>
　　<Binding Path="HeadersVisibility" RelativeSource="RelativeSource FindAncestor, AncestorLevel=1, AncestorType=DataGrid">
　　<Binding.ConverterParameter>
　　<DataGridHeadersVisibility>All</DataGridHeadersVisibility>
　　</Binding.ConverterParameter>
　　</Binding>
　　</Button.Visibility>
　　</Button>
　　<DataGridColumnHeadersPresenter Grid.Column="1" Name="PART_ColumnHeadersPresenter">
　　<DataGridColumnHeadersPresenter.Visibility>
　　<Binding Path="HeadersVisibility" RelativeSource="RelativeSource FindAncestor, AncestorLevel=1, AncestorType=DataGrid">
　　<Binding.ConverterParameter>
　　<DataGridHeadersVisibility>Column</DataGridHeadersVisibility>
　　</Binding.ConverterParameter>
　　</Binding>
　　</DataGridColumnHeadersPresenter.Visibility>
　　</DataGridColumnHeadersPresenter>
　　<ScrollContentPresenter CanContentScroll="TemplateBinding ScrollViewer.CanContentScroll" CanHorizontallyScroll="False" CanVerticallyScroll="False" Content="TemplateBinding ContentControl.Content" ContentStringFormat="TemplateBinding ContentControl.ContentStringFormat" ContentTemplate="TemplateBinding ContentControl.ContentTemplate" Grid.ColumnSpan="2" Grid.Row="1" Name="PART_ScrollContentPresenter" />
　　<ScrollBar Grid.Column="2" Grid.Row="1" Maximum="TemplateBinding ScrollViewer.ScrollableHeight" Name="PART_VerticalScrollBar" Orientation="Vertical" Value="Binding Path=VerticalOffset, Mode=OneWay, RelativeSource=RelativeSource TemplatedParent" ViewportSize="TemplateBinding ScrollViewer.ViewportHeight" Visibility="TemplateBinding ScrollViewer.ComputedVerticalScrollBarVisibility" />
　　<Grid Grid.Column="1" Grid.Row="2">
　　<Grid.ColumnDefinitions>
　　<ColumnDefinition Width="Binding Path=NonFrozenColumnsViewportHorizontalOffset, RelativeSource=RelativeSource FindAncestor, AncestorLevel=1, AncestorType=DataGrid" />
　　<ColumnDefinition Width="*" />
　　</Grid.ColumnDefinitions>
　　<ScrollBar Grid.Column="1" Maximum="TemplateBinding ScrollViewer.ScrollableWidth" Name="PART_HorizontalScrollBar" Orientation="Horizontal" Value="Binding Path=HorizontalOffset, Mode=OneWay, RelativeSource=RelativeSource TemplatedParent" ViewportSize="TemplateBinding ScrollViewer.ViewportWidth" Visibility="TemplateBinding ScrollViewer.ComputedHorizontalScrollBarVisibility" />
　　</Grid>
　　</Grid>
　　</ControlTemplate>
　　</ScrollViewer.Template>
　　<ItemsPresenter SnapsToDevicePixels="TemplateBinding UIElement.SnapsToDevicePixels" />
　　</ScrollViewer>
　　</Border>
　　</ControlTemplate>分三行三列，其中第一行第一列就是你要修改的部分，你可以放一个Border在里面，然后放置一个布局和他原先的按钮以及你要放的文字等，如下：

　　<ControlTemplate x:Key="Template1" TargetType="DataGrid">
　　<Border Background="TemplateBinding Control.Background" BorderBrush="TemplateBinding Control.BorderBrush" BorderThickness="TemplateBinding Control.BorderThickness" Padding="TemplateBinding Control.Padding" SnapsToDevicePixels="True">
　　<ScrollViewer Focusable="False" Name="DG_ScrollViewer">
　　<ScrollViewer.Template>
　　<ControlTemplate TargetType="ScrollViewer">
　　<Grid>
　　<Grid.ColumnDefinitions>
　　<ColumnDefinition Width="Auto" />
　　<ColumnDefinition Width="*" />
　　<ColumnDefinition Width="Auto" />
　　</Grid.ColumnDefinitions>
　　<Grid.RowDefinitions>
　　<RowDefinition Height="Auto" />
　　<RowDefinition Height="*" />
　　<RowDefinition Height="Auto" />
　　</Grid.RowDefinitions>
　　<Border Width="Binding Path=CellsPanelHorizontalOffset, RelativeSource=RelativeSource FindAncestor, AncestorLevel=1, AncestorType=DataGrid">
　　<Grid>
　　<Button Command="ApplicationCommands.SelectAll" Focusable="False" Style="DynamicResource ComponentResourceKey ResourceId=DataGridSelectAllButtonStyle, TypeInTargetAssembly=DataGrid">
　　<Button.Visibility>
　　<Binding Path="HeadersVisibility" RelativeSource="RelativeSource FindAncestor, AncestorLevel=1, AncestorType=DataGrid">
　　<Binding.ConverterParameter>
　　<DataGridHeadersVisibility>All</DataGridHeadersVisibility>
　　</Binding.ConverterParameter>
　　</Binding>
　　</Button.Visibility>
　　</Button>
　　<TextBlock Text="Hello" IsHitTestVisible="False"/>
　　</Grid>
　　</Border>
　　<DataGridColumnHeadersPresenter Grid.Column="1" Name="PART_ColumnHeadersPresenter">
　　......当然，这样后你会发现这个区域本身很小导致文字显示不全。你可以通过修改DataGridRowHeader的宽度来改善：

　　<Style TargetType="DataGridRowHeader">
　　<Setter Property="Width" Value="30"/>
　　</Style>本回答被提问者和网友采纳

WPF 获取DataGrid 控件选中的单元格信息

获取 DataGrid 选中的单元格的信息
DataGridCellInfo cell_Info = this.studentTable.SelectedCells[0];

studentTableItem student_Info = cell_Info.Item as studentTableItem;

 

studentTableItem  为一个自定义类 单元格中的数据绑定的是这个自定义类