單項選擇題

You are developing a Asp.net web application tht includes a panel control that has ID contentsection.You need to add a textBox control to the panel control.()

A.this.RequireControlState(this.LoadControl(typeof(TextBox),null));
B.this.ContentSection.control.add(this.FindControl(ContentSection.ID + "asp:TextBox"));
C.this.ContentSection.control.add(this.LoadControl(typeof(TextBox),null));
D.this.LoadComplete("asp:TextBox").IntiantiateIn(Content Section)

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