WPF绑定到局部变量 [英] WPF Binding to local variable

问题描述

你可以绑定到这样的局部变量吗？

SystemDataBase.cs

 命名空间WebWalker 
 {
 public partial class SystemDataBase：Window 
 {
 private string text =testing; 
 ... 
  

SystemDataBase.xaml

 < TextBox 
 Name =stbSQLConnectionString
 Text ={SystemDataBase.text}> 
< / TextBox> 
  

??

文字设置为局部变量text

解决方案

模式是：

  public string Text {get; set;} 
  

是

  {Binding Text，RelativeSource = {RelativeSource FindAncestor，AncestorType = Window}} 
  

如果您希望绑定自动更新，您应该使其成为DependencyProperty。

---

我认为3.5添加了 ElementName 到绑定，所以以下是一点点：

 < Window x：Name =Derp... 
< TextBlock Text ={Binding Text，ElementName = Derp}/> 
  

Can you bind to a local variable like this?

SystemDataBase.cs

namespace WebWalker
{
    public partial class SystemDataBase : Window
    {
        private string text = "testing";
...

SystemDataBase.xaml

 <TextBox 
       Name="stbSQLConnectionString" 
       Text="{SystemDataBase.text}">
 </TextBox>

??

Text is set to the local variable "text"

解决方案

The pattern is:

public string Text {get;set;}

and the binding is

{Binding Text, RelativeSource={RelativeSource FindAncestor, AncestorType=Window}}

If you want the binding to update automatically you should make it a DependencyProperty.

---

I think 3.5 added ElementName to bindings, so the following is a little easier:

<Window x:Name="Derp" ...
  <TextBlock Text="{Binding Text, ElementName=Derp}"/>

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