引用动态创建的控件？ [英] Referencing a dynamically created control?

问题描述

我知道如何在c＃中创建动态控件：

I know how to create a dynamic control in c#:

TextBlock tb = new TextBlock();
tb.Text = "This is a new textblock";

但是，如何通过代码引用这个新创建的控件？
我浏览了一个解决方案的网络，并发现了这个代码：

But how would I reference this newly created control through code? I browsed the net for a solution, and came across this code:

TextBlock tb = (TextBlock)this.FindName("TB");
tb.Text = "Text property changed"; 

每当我创建一个名称为新的控件时，我会收到一个例外：

Every time I create a new control with a name I get an exception:

TextBlock tb = new TextBlock();
tb.Text = "This is a new textblock";
tb.Name = "TB";

参数不正确。

"The parameter is incorrect."

我做错了什么？任何帮助将不胜感激。

What am I doing wrong? Any help would be greatly appreciated.

提前感谢。

推荐答案

异常参数不正确。可能由于创建的控件的重复名称而发生。

The Exception "The parameter is incorrect." may be occurring because of the duplicate names of the controls created.

对于动态控件部分：您必须将该控件添加到某些Grid或Stackpanel或某些东西。您可以通过获取父控件的内容或子级来引用该动态控件。

For the dynamic control part : you must be adding that control to some Grid or Stackpanel or something. you can reference that dynamic control by getting the content or children of the parent control.

喜欢：

TextBlock Tb= new TextBlock();
tb.Text = "Hello";

ContentPanel.Children.Add(Tb);

//引用：

var content = ContentPanel.Children;
foreach(UIElement uiElem in content)
{
  if(uiElem.GetType() == typeof(TextBlock))
  {
     TextBlock tb = uiElem as TextBlock;
     tb.Text = "Hyee";
  }
}

希望，这可能有帮助。

（注意：我直接在这里写了这段代码，而不是从VS复制，所以请检查语法和拼写。）

(Note: I have written this code directly here and not copied from VS, so please check syntax and spellings.)

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