遍历页面控件
普通aspx页面:
![](https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif)
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Web._Default" %>
<!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>Controls</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="Button1" runat="server" Text="Button" />
<asp:LinkButton ID="LinkButton1" runat="server">LinkButton</asp:LinkButton>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</div>
</form>
</body>
</html>
<!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>Controls</title>
</head>
System.Web.UI.LiteralControl-
System.Web.UI.HtmlControls.HtmlHead-
System.Web.UI.LiteralControl-
System.Web.UI.HtmlControls.HtmlForm-form1
System.Web.UI.LiteralControl-
System.Web.UI.HtmlControls.HtmlHead-
System.Web.UI.LiteralControl-
System.Web.UI.HtmlControls.HtmlForm-form1
System.Web.UI.LiteralControl-
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="Button1" runat="server" Text="Button" />
<asp:LinkButton ID="LinkButton1" runat="server">LinkButton</asp:LinkButton>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</div>
</form>
</body>
</html>
呈现最顶层控件元素代码
foreach (Control control in Page.Controls)
{
Response.Write(control.GetType().ToString() + "-<b>" + control.ID + "</b><br/>");
}
{
Response.Write(control.GetType().ToString() + "-<b>" + control.ID + "</b><br/>");
}
显示结果(不包含子控件)
System.Web.UI.LiteralControl-
System.Web.UI.HtmlControls.HtmlHead-
System.Web.UI.LiteralControl-
System.Web.UI.HtmlControls.HtmlForm-form1
System.Web.UI.LiteralControl-
System.Web.UI.HtmlControls.HtmlHead-
System.Web.UI.LiteralControl-
System.Web.UI.HtmlControls.HtmlForm-form1
System.Web.UI.LiteralControl-
取页面所有控件元素,包含子控件
取页面所有控件元素
protected StringBuilder conInfo = new StringBuilder();
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
outputControl(Page.Controls, 0);
}
Response.Write(conInfo.ToString());
}
protected void outputControl(ControlCollection controls, int depth)
{
foreach (Control control in controls)
{
conInfo.Append(string.Format("<br/>{0}>", new string('-', depth * 4)));
conInfo.Append(string.Format("{0}(<b>编号:{1}</b>)", control.GetType().ToString(),control.ID));
if (control.Controls.Count>0&&control.Controls!=null)
{
conInfo.Append(string.Format("(拥有{0}个子控件)", control.Controls.Count));
outputControl(control.Controls, depth + 1);
}
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
outputControl(Page.Controls, 0);
}
Response.Write(conInfo.ToString());
}
protected void outputControl(ControlCollection controls, int depth)
{
foreach (Control control in controls)
{
conInfo.Append(string.Format("<br/>{0}>", new string('-', depth * 4)));
conInfo.Append(string.Format("{0}(<b>编号:{1}</b>)", control.GetType().ToString(),control.ID));
if (control.Controls.Count>0&&control.Controls!=null)
{
conInfo.Append(string.Format("(拥有{0}个子控件)", control.Controls.Count));
outputControl(control.Controls, depth + 1);
}
}
}
显示结果
![](https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif)
>System.Web.UI.LiteralControl(编号:)
>System.Web.UI.HtmlControls.HtmlHead(编号:)(拥有1个子控件)
---->System.Web.UI.HtmlControls.HtmlTitle(编号:)
>System.Web.UI.LiteralControl(编号:)
>System.Web.UI.HtmlControls.HtmlForm(编号:form1)(拥有9个子控件)
---->System.Web.UI.LiteralControl(编号:)
---->System.Web.UI.WebControls.Button(编号:Button1)
---->System.Web.UI.LiteralControl(编号:)
---->System.Web.UI.WebControls.LinkButton(编号:LinkButton1)
---->System.Web.UI.LiteralControl(编号:)
---->System.Web.UI.WebControls.TextBox(编号:TextBox1)
---->System.Web.UI.LiteralControl(编号:)
---->System.Web.UI.WebControls.Label(编号:Label1)
---->System.Web.UI.LiteralControl(编号:)
>System.Web.UI.LiteralControl(编号:)
>System.Web.UI.HtmlControls.HtmlHead(编号:)(拥有1个子控件)
---->System.Web.UI.HtmlControls.HtmlTitle(编号:)
>System.Web.UI.LiteralControl(编号:)
>System.Web.UI.HtmlControls.HtmlForm(编号:form1)(拥有9个子控件)
---->System.Web.UI.LiteralControl(编号:)
---->System.Web.UI.WebControls.Button(编号:Button1)
---->System.Web.UI.LiteralControl(编号:)
---->System.Web.UI.WebControls.LinkButton(编号:LinkButton1)
---->System.Web.UI.LiteralControl(编号:)
---->System.Web.UI.WebControls.TextBox(编号:TextBox1)
---->System.Web.UI.LiteralControl(编号:)
---->System.Web.UI.WebControls.Label(编号:Label1)
---->System.Web.UI.LiteralControl(编号:)
>System.Web.UI.LiteralControl(编号:)