从某容器/控件获取指定类型的子控件（C#）

语言：C#

环境：多文档

示例：

privatevoid GetControl(Controlcontrol)

       {

           //获取选定容器/控件的子控件

           System.Windows.Forms.Control.ControlCollection controls = this.control.Controls;             

           foreach (Control c in controls)

           {

               //判断控件是否为目标控件类型，此处为RichTextBox

               if (c is RichTextBox)

               {

                   RichTextBox rtb = c as RichTextBox;

                   ……;

               }

           }

       }