我的 XAML 代码:
<Window x:Class="MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:Datagrid_Binding"
mc:Ignorable="d"
Title="MainWindow" Height="8517" Width="1244">
<Grid>
<DataGrid x:Name="WaterfallDataGrid" CanUserSortColumns="False" ColumnWidth="60" AutoGenerateColumns="False">
<DataGrid.Columns>
<DataGridTextColumn Header="Load" Binding="{Binding Load}"></DataGridTextColumn>
<DataGridTextColumn Header="PF" Binding="{Binding PF}"></DataGridTextColumn>
<DataGridTextColumn Header="Spare" Binding="{Binding Spare}"></DataGridTextColumn>
</DataGrid.Columns>
<DataGridTextColumn Binding="{Binding Load}">
<DataGridTextColumn.ElementStyle>
<Style TargetType="{x:Type TextBlock}">
<Style.Triggers>
<Trigger Property="Text" Value="Full Load">
<Setter Property="Background" Value="LightGreen"/>
</Trigger>
</Style.Triggers>
</Style>
</DataGridTextColumn.ElementStyle>
</DataGridTextColumn>
</DataGrid>
</Grid>
</Window>
我的 VB.net 代码。
Class MainWindow
Public Sub New()
' This call is required by the designer.
InitializeComponent()
' Add any initialization after the InitializeComponent() call.
Dim dt3 As New DataTable("Waterfall")
dt3.Columns.Add("Load")
dt3.Columns.Add("PF")
dt3.Columns.Add("Spare")
'dt3.rows.add(New Object() {"full load", "0.8", "20%"})
dt3.Rows.Add("full load", "0.8", "20%")
WaterfallDataGrid.ItemsSource = dt3.DefaultView
End Sub
End Class
我想做的是,当单元格具有文本"完全加载"时,它会更改其单元格颜色。我在运行时收到一个错误,指出"在使用 ItemsSource 之前,项目集合必须为空"。对此非常困惑。一些帮助表示赞赏。
问题是您定义了同一列两次。
<Window x:Class="MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid>
<DataGrid x:Name="WaterfallDataGrid" CanUserSortColumns="False" ColumnWidth="60" AutoGenerateColumns="False">
<DataGrid.Columns>
<DataGridTextColumn Header="Load" Binding="{Binding Load}">
<DataGridTextColumn.ElementStyle>
<Style TargetType="{x:Type TextBlock}">
<Style.Triggers>
<Trigger Property="Text" Value="full load">
<Setter Property="Background" Value="LightGreen"/>
</Trigger>
</Style.Triggers>
</Style>
</DataGridTextColumn.ElementStyle>
</DataGridTextColumn>
<DataGridTextColumn Header="PF" Binding="{Binding PF}"></DataGridTextColumn>
<DataGridTextColumn Header="Spare" Binding="{Binding Spare}"></DataGridTextColumn>
</DataGrid.Columns>
</DataGrid>
</Grid>
</Window>