将文本框绑定到wpf表单上的按钮

Question

我有3个按钮和3个文本字段。我希望每个按钮都执行相同的方法，但根据单击的按钮，应该填充一个文本不同的文本字段。我认为这可以通过将每个文本字段绑定到不同的按钮数据上下文来实现，但该字段没有填充。这是我的xaml-

<Window x:Class="vbaGitTool.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:vbaGitTool"
mc:Ignorable="d"
Title="Vba Git Tool" 
Height="369" 
Width="800" 
MaxWidth="800" 
MaxHeight="369"
Background="Aquamarine">
<Grid Margin="0,0,0,-1">
<GroupBox Header="Create .txt File From Workbook" HorizontalAlignment="Left" Height="118" Margin="10,10,0,0" VerticalAlignment="Top" Width="772" BorderBrush="Black">
<Grid Margin="0,0,0,4">
<Button
x:Name="workbookSelect_btn"
Content="Select WB Path"
HorizontalAlignment="Left"
Margin="10,30,0,0"
VerticalAlignment="Top"
Width="102"
Click="Click_SelectFilePath" Height="23" />
<TextBox 
x:Name="workbookPath_txt"
DataContext="{Binding 
ElementName=workbookSelect_btn,
Path=DataContext, 
Mode=OneWayToSource}"
HorizontalAlignment="Left" 
Height="23" 
Margin="126,30,0,0" 
TextWrapping="Wrap" 
VerticalAlignment="Top" 
Width="624"/>
</Grid>
</GroupBox>

<GroupBox Header="Compare .txt Files" HorizontalAlignment="Left" Height="140" Margin="10,156,0,0" VerticalAlignment="Top" Width="772" BorderBrush="Black">
<Grid Margin="0,0,0,-42">
<Button 
x:Name="selectDev_btn"
Content="Select Dev File" 
HorizontalAlignment="Left" 
Margin="10,10,0,0" 
VerticalAlignment="Top" 
Width="96" 
Height="23"/>
<Button 
x:Name="selectProd_btn"
Content="Select Prod File" 
HorizontalAlignment="Left" 
Margin="10,48,0,0" 
VerticalAlignment="Top" 
Width="96" 
Height="23"/>
<TextBox 
x:Name="devFilePath" 
DataContext="{Binding 
ElementName=selectDev_btn,
Path=DataContext, 
Mode=OneWay}"
HorizontalAlignment="Left" 
Height="23" Margin="120,10,0,0" 
TextWrapping="Wrap" 
Text="" 
VerticalAlignment="Top" 
Width="630"/>
<TextBox 
x:Name="prodFilePath" 
DataContext="{Binding 
ElementName=selectProd_btn,
Path=DataContext, 
Mode=OneWay}"
HorizontalAlignment="Left" 
Height="23" 
Margin="120,48,0,0" 
TextWrapping="Wrap" 
Text="" 
VerticalAlignment="Top" 
Width="630"/>
</Grid>       
</GroupBox>
</Grid>
</Window>

这是可重复使用的方法

public partial class MainWindow : System.Windows.Window
{
public MainWindow()
{
InitializeComponent();
}
private void Click_SelectFilePath(object sender, RoutedEventArgs e)
{
System.Windows.Forms.OpenFileDialog ofd = 
new System.Windows.Forms.OpenFileDialog();
ofd.Title = "Find File";
ofd.Filter = "Excel Files (*.xls) | *.xlsm | All Files(*.*) | *.*";  
DialogResult dr = ofd.ShowDialog();
this.DataContext = ofd.FileName;
}
}

Answer 1

为了在TextBox中设置文本，或者更好地设置TextBlock中的文本，您可以在其Text属性上设置Binding，使数据从源流到目标，而不是OneWayToSource:

<TextBlock Text="{Binding ElementName=workbookSelect_btn, Path=DataContext}"/>

或

<TextBlock Text="{Binding DataContext, ElementName=workbookSelect_btn}"/>

现在您还必须设置按钮的DataContext，而不是窗口的DataContext：

((Button)sender).DataContext = ofd.FileName;

---

将DataContext用于此目的看起来也很奇怪。考虑创建一个视图模型，窗口中的所有UI元素都将其属性绑定到该视图模型。在web上搜索MVVM。

作为一种变通方法，请改用Tag属性：

<TextBlock Text="{Binding Tag, ElementName=workbookSelect_btn}"/>

带有

((Button)sender).Tag = ofd.FileName;