asp.net 遍历aspx页面中的TextBox控件，并设置属性为只读

aspx页面中的代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="遍历页面所有某一类型的控件.WebForm1" %> 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 

<html xmlns="http://www.w3.org/1999/xhtml"> 
<head runat="server"> 
    <title></title>
</head>
<body>
    <form id="form1" runat="server"> 
    <div>
        <asp:TextBox ID="TextBox1" runat="server">1</asp:TextBox> 
        <br />
        <p></p>
        <asp:TextBox ID="TextBox2" runat="server">2</asp:TextBox> 
        <br />
        <p></p>
        <asp:TextBox ID="TextBox3" runat="server">3</asp:TextBox> 
        <br />
        <p></p>
        <asp:TextBox ID="TextBox4" runat="server">4</asp:TextBox> 
        <br />
        <p></p>
    </div>
    </form>
</body>
</html>

方法1：

for (int i = 0; i < Page.Controls.Count; i++) 
            {
                foreach (System.Web.UI.Control stl in Page.Controls[i].Controls) 
                {
                    Response.Write(stl.ToString() + "<br/>"); 
                    if (stl is TextBox) 
                    {
                        TextBox tb = (TextBox)stl;
                        tb.ReadOnly = true; 
                    }
                }
            }

方法2：

foreach(System.Web.UI.Control stl in this.Form.Controls) 
            {
                Response.Write(stl.ToString()+"<br/>"); 
                if(stl is System.Web.UI.WebControls.TextBox) 
                {
                    TextBox tb = (TextBox)stl;
                    tb.ReadOnly = true; 
                }
            }

先获取页面上所有的控件（包括客户端和服务器端控件）--- this.Form.Controls

先过滤得到服务器 --- is System.Web.UI.WebControls.TextBox

强制转换为TextBox控件 ---TextBox tb = (TextBox)stl;

设置属性 ---tb.ReadOnly = true;

posted on 2012-02-18 21:09 LitDev 阅读(3610) 评论(1) 编辑收藏举报