WPF FindName () did not find the element with the specified name

1.FindName () description, which can be used to get an element or label with a registered name

 // //  summary:  //  Find the element with the provided identifier name.  // //  parameters:  //  name:  //  The name of the requested element.  // //  Returns the result:  //  The requested element. If no matching element is found, the value will be null.  public  object  FindName (string  name); 

But the way to add a name registration in the background is to use Registername () instead of assigning a value directly to name

        //        //Summary://provides an accessor to simplify access to the System.Windows.NameScope registration method. //        //Parameters://Name://the name to use in the specified name-object map. //        //scopedelement://the mapped object.          Public voidRegistername (stringNameObjectScopedelement);

To illustrate:

1. Direct assignment name, cannot be found by FindName ()

 //  background Add the element of name  Label LBL1 = new   Label (); lbl1. Content  =   Zhang Sanfeng   " ;LBL1. Name  =  lbl1  "; //  This specifies that the  panelOne.Children.Add (LBL1) cannot be found by FindName (); 

// find elements added in background, not found this. FindName ("lbl1" as Label; if NULL ) {    MessageBox.Show (lbl1. Content.tostring ());}

2. Using Registername (), registration can be found using FindName ()

New" Sea Bright moon ";p anelone.registername ("block1 " // Register the block named Block1 name on the Panelone PANELONE.CHILDREN.ADD (block);

//obtained from the current window, you can access theTextBlock Block1 = btn1. FindName ("Block1") asTextBlock;if(Block1! =NULL) {MessageBox.Show (block1. Text);}//obtained from the panel, you can access theTextBlock Block2 = Panelone.findname ("Block1") asTextBlock;if(Block2! =NULL) {MessageBox.Show ("Panelone:"+Block2. Text);}

WPF FindName () did not find the element with the specified name