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Control.CreateControlCollection Method

Creates a new ControlCollection object to hold the child controls (both literal and server) of the server control.

Namespace:  System.Web.UI
Assembly:  System.Web (in System.Web.dll)

protected virtual ControlCollection CreateControlCollection()

Return Value

Type: System.Web.UI.ControlCollection
A ControlCollection object to contain the current server control's child server controls.

Override this method in a custom server control if you have created a collection object that is derived from the ControlCollection class. You can then instantiate that collection class in the override of this method.

The following code example overrides the CreateControlCollection method to create an instance of a CustomControlCollection class, which inherits from the ControlCollection class.

		// Override the CreateControlCollection method to  
		// write to the Trace object when tracing is enabled 
		// for the page or application in which this control 
		// is included.    
		protected override ControlCollection CreateControlCollection()
		{
			return new CustomControlCollection(this);
		}

The following code example uses the CreateControlCollection method in a custom server control override of the CreateChildControls method. The new collection is created, and then populated with two child controls, firstControl and secondControl.


      protected override void CreateChildControls()
      {               
         // Creates a new ControlCollection.  
         this.CreateControlCollection();

         // Create child controls.
          ChildControl firstControl = new ChildControl();
         firstControl.Message = "FirstChildControl";

         ChildControl secondControl = new ChildControl();
         secondControl.Message = "SecondChildControl";

         Controls.Add(firstControl);
         Controls.Add(secondControl);

         // Prevent child controls from being created again.
         ChildControlsCreated = true;
      }

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1
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