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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