我为按钮创建了一个模板:
<Style x:Key="TableButtonStyle" TargetType="{x:Type Button}">
<Setter Property="Background" Value="{StaticResource GrayBlueGradientBrush}" />
<Setter Property="Width" Value="100" />
<Setter Property="Height" Value="100" />
<Setter Property="Margin" Value="20" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Grid Width="{TemplateBinding Width}"
Height="{TemplateBinding Height}" ClipToBounds="True">
<!-- Inner Rectangle with rounded corners. -->
<Rectangle x:Name="innerRectangle"
Stroke="Transparent"
StrokeThickness="20"
Fill="{TemplateBinding Background}"
RadiusX="20" RadiusY="20" />
<Ellipse x:Name="NumberGuests"
Width="25"
Height="25"
Stretch="Fill"
StrokeLineJoin="Round"
Fill="Red"
Margin="-70,-70,0,0"/>
<Ellipse x:Name="NumberChecks"
Width="25"
Height="25"
Stretch="Fill"
StrokeLineJoin="Round"
Fill="Green"
Margin="70,-70,0,0"/>
<Rectangle x:Name="Time"
Width="70"
Height="25"
Fill="White"
RadiusX="10" RadiusY="10"
Margin="0,50,0,0"/>
<TextBlock x:Name='TableID'
FontSize="12"
HorizontalAlignment="Center"
FontWeight="Bold"
Margin="0,25,0,0"
Text="Table_New"/>
<TextBlock x:Name='TimeID'
FontSize="12"
HorizontalAlignment="Center"
Margin="0,65,0,0"
Text="Time_New" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsPressed" Value="True">
<Setter Property="Opacity" Value="0.5" />
</Trigger>
</Style.Triggers>
</Style>
Private Sub CreateButton_Click(sender As Object, e As RoutedEventArgs)
Dim TableName As String
Dim TimeNotAvailable As String
LayoutGrid.AllowDragging = True
ToggleButton.Content = "Edit"
Dim LocationButton As New Button
Dim style As Style = TryCast(Me.FindResource("TableButtonStyle"), Style)
TableName = "Test" & I
TimeNotAvailable = "Time" & I
I += 1
LocationButton.Style = style
TableID.Content = TableName
TimeID.Content = TimeNotAvailable
LayoutGrid.Children.Add(LocationButton)
AddHandler LocationButton.Click, AddressOf LocationButtonClicked
End Sub
每次按下"创建按钮"按钮时,都会根据模板生成一个按钮。但是,我无法设置textblock.text TableID和TimeID。创建按钮时,我需要tableID和TimeID来获取变量的值。如"表1"、"表2"等
我尝试了所有不同类型的绑定、资源等,但绑定会更改所有按钮中的文本,第一个按钮的文本是"表1",但当生成第二个按钮时,两个按钮都是"表2"。我也尝试了DataContext,但两个文本块都有相同的数据。
我尝试直接在xaml中创建一个按钮,"TableID.Content=TableName"有效,但使用模板时无法识别"TableID"。
请提供帮助。感谢
作为一个快速解决方案,您可以尝试这种变通方法
向Text属性添加绑定,如下所示
<TextBlock x:Name='TableID'
FontSize="12"
HorizontalAlignment="Center"
FontWeight="Bold"
Margin="0,25,0,0"
Text="{Binding [0], FallbackValue=Table_New}"/>
<TextBlock x:Name='TimeID'
FontSize="12"
HorizontalAlignment="Center"
Margin="0,65,0,0"
Text="{Binding [1], FallbackValue=Time_New}" />
并替换以下
TableID.Content = TableName
TimeID.Content = TimeNotAvailable
带有
LocationButton.DataContext = { TableName, TimeNotAvailable }
上面的示例演示了在UI上显示数据的MVVM方法。
解释
{ TableName, TimeNotAvailable }
创建和一个隐式数组,该数组作为DataContext传递给按钮,然后用于与索引器绑定,其中[0]是第一个元素,[1]是第二个元素。