清空指定页面上所有的控件内容

#region 清空指定页面上所有的控件内容,public static void ClearAllContent()    // <summary>    /// 清空指定页面上所有的控件内容,包括TextBox,CheckBox,CheckBoxList,RadioButton,RadioButtonList。但是///不清除如ListBox,DropDownList,因为这样的控件值对当前页面来说还可以用,一般这些控件里都是保存的字典数据。    /// Author:Kevin    /// 日期:2004-12-02     /// </summary>     /// <param name="page"> 指定的页面</param>    public static void ClearAllContent(System.Web.UI.Control page)     {                  int nPageControls = page.Controls.Count;                  for (int i = 0; i < nPageControls; i++)                 {                            foreach (System.Web.UI.Control control in page.Controls[i].Controls)                           {                                       if (control.HasControls())                                       {                                                       ClearAllText(control);                                       }                                     else                                      {                                                       if (control is TextBox)                             (control as TextBox).Text = "";                                                       if (control is CheckBox)                             (control as CheckBox).Checked = false;                                                       if (control is RadioButtonList)                             (control as RadioButtonList).SelectedIndex = -1;                                                       if (control is RadioButton)                              (control as RadioButton).Checked = false;                                                       if (control is CheckBoxList)                                                        {                                                                        foreach (ListItem item in (control as CheckBoxList).Items)                                                                     {                                                                                    item.Selected = false;                                                                     }                                                        }                                      }//if..else                          }//foreach               }//for    }    #endregion

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