如何在 windows phone 8 中获取数据模板内的文本框的值答案

【问题标题】：How to Get Value of Textbox inside data template in windows phone 8如何在 windows phone 8 中获取数据模板内的文本框的值
【发布时间】：2014-08-25 08:32:23
【问题描述】：

当我单击更新按钮时，我想获取数据模板内的文本框的值。

                    <ListBox.ItemTemplate>
                        <DataTemplate>
                            <StackPanel>
                                <StackPanel Orientation="Horizontal">
                                    <TextBlock HorizontalAlignment="Left" Margin="10,0,0,0" TextWrapping="Wrap" Text="Username:" VerticalAlignment="Top" Height="30" Width="176" FontSize="20"/>
                                    <TextBox Text="{Binding Username}" x:Name="tb41" Grid.Column="1" HorizontalAlignment="Left" Margin="10.167,4,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="174" />
                                </StackPanel>
                                <StackPanel Orientation="Horizontal">
                                <TextBlock HorizontalAlignment="Left" Margin="10,10,0,0" Grid.Row="1" TextWrapping="Wrap" Text="Password:" VerticalAlignment="Top" Height="28" Width="176" FontSize="20"/>
                                    <TextBox Text="{Binding Password}" x:Name="tb42" Grid.Column="1" HorizontalAlignment="Left" Margin="10.167,0,0,1.333" Grid.Row="1" TextWrapping="Wrap" VerticalAlignment="Bottom" Width="174"/>
                                </StackPanel>
                                <StackPanel Orientation="Horizontal">
                                    <TextBlock HorizontalAlignment="Left" Margin="10,10.667,0,0" Grid.Row="2" TextWrapping="Wrap" Text="Confirm Password:" VerticalAlignment="Top" Height="32" Width="176" FontSize="20"/>
                                    <TextBox Text="{Binding ConfirmPassword}" x:Name="tb43" Grid.Column="1" HorizontalAlignment="Left" Margin="10.167,11.5,0,0" Grid.Row="2" TextWrapping="Wrap" VerticalAlignment="Top" Width="174"/>
                                </StackPanel>
                                <StackPanel Orientation="Horizontal">
                                    <TextBlock HorizontalAlignment="Left" Margin="10,10.167,0,0" Grid.Row="3" TextWrapping="Wrap" Text="Name:" VerticalAlignment="Top" Height="31" Width="176" FontSize="20"/>
                                    <TextBox Text="{Binding Name}" x:Name="tb44" Grid.Column="1" HorizontalAlignment="Left" Margin="10.167,10.167,0,0" Grid.Row="3" TextWrapping="Wrap" VerticalAlignment="Top" Width="174"/>
                                </StackPanel>
                                <StackPanel Orientation="Horizontal">
                                    <TextBlock HorizontalAlignment="Left" Margin="10,10.333,0,0" Grid.Row="4" TextWrapping="Wrap" Text="Age:" VerticalAlignment="Top" Height="29" Width="176" FontSize="20"/>
                                    <TextBox Text="{Binding Age}" x:Name="tb45" Grid.Column="1" HorizontalAlignment="Left" Margin="10.167,8.333,0,0" Grid.Row="4" TextWrapping="Wrap" VerticalAlignment="Top" Width="174"/>
                                </StackPanel>
                                <StackPanel Orientation="Horizontal">
                                    <TextBlock HorizontalAlignment="Left" Margin="0,10.167,0,0" Grid.Row="5" TextWrapping="Wrap" Text="Mobile no:" VerticalAlignment="Top" Height="29" Width="186" FontSize="20"/>
                                    <TextBox Text="{Binding Mobile}" x:Name="tb46" Grid.Column="1" HorizontalAlignment="Left" Margin="10.167,8.167,0,0" Grid.Row="5" TextWrapping="Wrap" VerticalAlignment="Top" Width="174"/>
                                </StackPanel>
                                <StackPanel Orientation="Horizontal">
                                    <TextBlock HorizontalAlignment="Left" Margin="0,10,0,0" Grid.Row="6" TextWrapping="Wrap" Text="Email id" VerticalAlignment="Top" Height="32" Width="186" FontSize="20"/>
                                    <TextBox Text="{Binding Email}" x:Name="tb47" Grid.Column="1" HorizontalAlignment="Left" Margin="10.167,8.667,0,0" Grid.Row="6" TextWrapping="Wrap" VerticalAlignment="Top" Width="174"/>
                                </StackPanel>
                                <StackPanel Orientation="Horizontal">
                                    <TextBlock HorizontalAlignment="Left" Margin="0,10.333,0,0" Grid.Row="7" TextWrapping="Wrap" Text="Organisation:" VerticalAlignment="Top" Height="30" Width="186" FontSize="20"/>                                 
                                <TextBox Text="{Binding Organisation}" x:Name="tb48" Grid.Column="1" HorizontalAlignment="Left" Margin="10.167,8,0,0" Grid.Row="7" TextWrapping="Wrap" VerticalAlignment="Top" Width="174"/>
                                </StackPanel>

                                <StackPanel Orientation="Horizontal">
                                    <TextBlock HorizontalAlignment="Left" Margin="0,10.333,0,0" Grid.Row="7" TextWrapping="Wrap" Text="Id:" VerticalAlignment="Top" Height="30" Width="186" FontSize="20"/>
                                    <TextBox Text="{Binding Id}" x:Name="tb49" Grid.Column="1" HorizontalAlignment="Left" Margin="10.167,8,0,0" Grid.Row="7" TextWrapping="Wrap" VerticalAlignment="Top" Width="174"/>
                                </StackPanel>
                                <StackPanel Orientation="Horizontal">
                                    <Button Content="Reset" HorizontalAlignment="Left" Margin="56,54,0,0" Grid.Row="7" Grid.RowSpan="2" VerticalAlignment="Top"/>
                                <Button Content="Update" Grid.Column="1" HorizontalAlignment="Left" Margin="46.167,54,0,0" Grid.Row="7" Grid.RowSpan="2" VerticalAlignment="Top"/>
                                </StackPanel>
                            </StackPanel>
                        </DataTemplate>
                    </ListBox.ItemTemplate>
                </ListBox>

【问题讨论】：

看起来您已经将其数据绑定到“Id”，因此如果您实现双向绑定，则 Textbox 的值就是您的 Id 属性。

标签： xaml data-binding windows-phone-8.1

【解决方案1】：

有不同的方法可以实现，这里有一个：

<Button Content="Update" Tag={Binding ElementName=tb49} Click="Button_Click" />

在后面的代码中：

private void Button_Click(object sender, RoutedEventArgs e)
{
  Button btn = (Button)sender;

  TextBox textBox = (TextBox)btn.Tag;
  string text = textbox.Text
}

您还可以使用按钮的 DataContext 直接访问它所绑定的对象的属性。

【讨论】：