从dropdownbutton中的dropdowncontent绑定到后面的代码 [英] Binding to code behind from dropdowncontent in dropdownbutton

问题描述

我创建了一个用户控件，其中包含一个下拉按钮.

dropdownbuttons dropdowncontent包含许多复选框，这些复选框应该绑定到usercontrol本身的布尔属性(为了安全起见，直到按下ok并将布尔值复制到datacontext时，将其用作数据库搜索的搜索条件) ).

但是{StaticResource Self}不起作用，也没有寻找祖先类型.可能是因为复选框位于下拉按钮的dropdowncontent区域中.

问题是:如何在XAML中通过下拉按钮dropdowncontent绑定到用户控件上的属性(即，文件背后的代码中定义的属性)?

谢谢！

I have created a usercontrol, containing a dropdownbutton.

The dropdownbuttons dropdowncontent contains a number of checkboxes, which are supposed to be bound to boolean properties of the usercontrol itself (for safe keeping until a ok is pressed and the booleans gets copied to the datacontext where it is used as search criteria in a database search).

But {StaticResource Self} does not work and neither does looking for the ancestor type. Propably because the checkboxes are in the dropdowncontent area of the dropdownbutton.

The question is: How do I in XAML bind to properties on my usercontrol (that is, properties defined in the code behind file) from a dropdownbuttons dropdowncontent?

Thanks!

推荐答案

我认为您必须使用 delegate

尝试以下示例:
在页面后面的代码中:

Hi,

I think you must use delegate

Try this example:
In your code behind page:

protected void Page_Load(object sender, EventArgs e)
{
   //Do something?...
  ucOverride.SendValue += delegate(bool checkedOverride)
   {
      if (checkedOverride == true)
      {
          // Do somthing here?...
          //...
      }
   };
   //Do something?...
}

在您的自定义控件页面代码后面:

In you custom control page code behind:

public delegate void SendData(bool checkedOverride);
public event SendData SendValue;


protected void btnOk_Click(object sender, EventArgs e)
{
  //UpdatePanel1.Update();
  bool checkeds = false;
  if (chkOverride.Checked)
  {
     checkeds = true;
  }
  else
  {
     checkeds = false;
  }
  if (SendValue != null)
  {
            SendValue(checkeds);
  }
}

希望这可以帮助...

请记住，如果有帮助，请将其标记为答案；如果没有帮助，则将其取消标记.

问候，

代数

Hope this could help...

Please remember to mark the replies as answers if they help and unmark them if they provide no help.

Regards,

Algem

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