.net - 使用 WPF 的网格中的按钮数组

Question

下面的代码是在 .net 4 中的 WPF 中，它显示了一个开始时为空的网格。当我添加元素时，它会在最后两列分别显示带有进度条和“发送”按钮的行。当我再添加一行时，会出现一个进度条和按钮。但是如果我点击按钮，所有按钮都使用相同的事件处理程序。如何使每个进度条和行中的按钮不同？

<Window x:Class="ObservableCollection.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 Name="DataGrid" ItemsSource="Binding DataGrids" AutoGenerateColumns="False" RowHeight="30"
                  ColumnWidth="100" ColumnHeaderHeight="50" HeadersVisibility="Column" AlternatingRowBackground="LightBlue"
                  CanUserAddRows="False" Background="Transparent" RowBackground="Transparent" BorderBrush="Gray"
                  CellStyle="{StaticResource Body_Conternt_DataGrid_Centering}"
                  IsReadOnly="True" Margin="49,66,45,62" Opacity="1" >
                  <DataGrid.Columns>
            <DataGridTextColumn Width="*" Header="UID" Binding="{Binding Uid}" />
            <DataGridTextColumn Width="*" Header="Type" Binding="{Binding Type}" />
            <DataGridTextColumn Width="*" Header="Channel Type" Binding="{Binding ChannelType}" />
            <DataGridTextColumn Width="*" Header="Certificate" Binding="{Binding Certificate}" />
            <DataGridTextColumn Width="*" Header="Life Cycle State" Binding="{Binding LifeCycle}" />
            <DataGridTextColumn Width="*" Header="Status" Binding="{Binding Status}" />
            <DataGridTextColumn Width="*" Header="Image UID" Binding="{Binding ImageUid}" />

            <DataGridTemplateColumn Width="*">
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <ProgressBar Height="20" Value="{Binding Progress}"></ProgressBar>
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>

            <DataGridTemplateColumn Width="*">
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <Button Name="btnSend" Click="btnSend_Click">Send</Button>
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>
                </DataGrid.Columns>
        </DataGrid>
    </Grid>
</Window>

Answer 1

我正在考虑将 Tag 属性绑定(bind)到您要发送的任何内容的唯一键，

<Button Tag="{Binding ID}> 

并在您的发送事件中取回标签值..

var button = sender as Button;
var tag = button.Tag;