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ASP.NET中使用多个runat=server form

發(fā)布時(shí)間：2023/11/27 生活经验 41 豆豆

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作者：未知

ASP.NET 在同一個(gè)頁面不支持多個(gè) runat=server forms，要解決這個(gè)問題，可以把每個(gè) form 放在一個(gè)單獨(dú)的 panel 控件中，這樣用戶就可以簡單地通過單選按鈕在不同 panel 間切換。
代碼如下：
2FormExample.aspx

<%@ Page language="c#" Codebehind="2FormExample.cs" AutoEventWireup="false"
Inherits="_3leaf_app.C2FormExample" %>
<html><head>
<meta name=vs_targetSchema content="HTML 4.0">
<meta name="GENERATOR" Content="Microsoft Visual Studio 7.0">
<meta name="CODE_LANGUAGE" Content="C#"></head>
<body>

<form method="post" runat="server" ID=Form1>
????<p>Lookup by
????<asp:RadioButton id=RadioButton1 runat="server" Text="First Name" AutoPostBack="True"??groupname=g1
checked=True></asp:RadioButton>
????<asp:RadioButton id=RadioButton2 runat="server" Text="Last Name" AutoPostBack="True"
groupname=g1></asp:RadioButton></p>
????<p></p>
????<p>
????<asp:Panel id=Panel1 runat="server" visible=True>
????????First Name :
????????<asp:TextBox id=TextBox1 runat="server"></asp:TextBox>
????????<asp:RequiredFieldValidator id=RequiredFieldValidator1 runat="server" ErrorMessage="*"
ControlToValidate="TextBox1"></asp:RequiredFieldValidator>
????????<asp:Button id=Button1 runat="server" Text="Submit"></asp:Button>
????</asp:Panel>
????<asp:Panel id=Panel2 runat="server" visible=False>
????????Last Name :
????????<asp:TextBox id=TextBox2 runat="server"></asp:TextBox>
????????<asp:RequiredFieldValidator id=RequiredFieldValidator2 runat="server" ErrorMessage="*"
ControlToValidate="TextBox2"></asp:RequiredFieldValidator>
????????<asp:Button id=Button2 runat="server" Text="Submit"></asp:Button>
????</asp:Panel>
????<p></p>
????<p>
????????<asp:label id=Label1 runat="server"></asp:label>
????</p>
</form>

</body></html>

2FormExample.cs

namespace _3leaf_app
{
????using System;
????using System.Collections;
????using System.ComponentModel;
????using System.Data;
????using System.Drawing;
????using System.Web;
????using System.Web.SessionState;
????using System.Web.UI;
????using System.Web.UI.WebControls;
????using System.Web.UI.HtmlControls;

????/// <summary>
????///????Summary description for C2FormExample.
????/// </summary>
????public class C2FormExample : System.Web.UI.Page
????{
??protected System.Web.UI.WebControls.Button Button2;
??protected System.Web.UI.WebControls.RequiredFieldValidator RequiredFieldValidator2;
??protected System.Web.UI.WebControls.TextBox TextBox2;
??protected System.Web.UI.WebControls.Button Button1;
??protected System.Web.UI.WebControls.RequiredFieldValidator RequiredFieldValidator1;
??protected System.Web.UI.WebControls.TextBox TextBox1;
??protected System.Web.UI.WebControls.Label Label1;
??protected System.Web.UI.WebControls.Panel Panel2;
??protected System.Web.UI.WebControls.Panel Panel1;
??protected System.Web.UI.WebControls.RadioButton RadioButton2;
??protected System.Web.UI.WebControls.RadioButton RadioButton1;
????
????public C2FormExample()
????{
????????Page.Init += new System.EventHandler(Page_Init);
????????}

????????protected void Page_Load(object sender, EventArgs e)
????????{
????????????if (!IsPostBack)
????????????{
????????????}
????????}

????????protected void Page_Init(object sender, EventArgs e)
????????{
????????????//
????????????// CODEGEN: This call is required by the ASP+ Windows Form Designer.
????????????//
????????????InitializeComponent();
????????}

????????/// <summary>
????????///????Required method for Designer support - do not modify
????????///????the contents of this method with the code editor.
????????/// </summary>
????????private void InitializeComponent()
??{
???RadioButton1.CheckedChanged += new System.EventHandler (this.RadioButton1_CheckedChanged);
???Button1.Click += new System.EventHandler (this.Button1_Click);
???RadioButton2.CheckedChanged += new System.EventHandler (this.RadioButton2_CheckedChanged);
???Button2.Click += new System.EventHandler (this.Button2_Click);
???this.Load += new System.EventHandler (this.Page_Load);
??}

????????public void Button2_Click (object sender, System.EventArgs e)
????????{
????????????Label1.Text = "You want to search on last name";
????????}

????????public void Button1_Click (object sender, System.EventArgs e)
????????{
????????????Label1.Text = "You want to search on first name";
????????}

????????public void RadioButton2_CheckedChanged (object sender, System.EventArgs e)
????????{
????????????Panel1.Visible = false;
????????????Panel2.Visible = true;
????????}

????????public void RadioButton1_CheckedChanged (object sender, System.EventArgs e)
????????{
????????????Panel1.Visible = true;
????????????Panel2.Visible = false;
????????}
????}
}

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