ASP.NET 在同一个页面不支持多个 runat=server forms,要解决这个问题,可以把每个 form 放在一个单独的 panel 控件中,这样用户就可以简单地通过单选按钮在不同 panel 间切换。 代码如下: 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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