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.net 后台提交表单，获取返回结果

2015-11-09 19:27 489 查看

a.aspx后台提交表单，b.aspx接收表单（根据input的name获得值）

1、a.aspx

[html] view
plaincopy

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="a.aspx.cs" Inherits="a" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>

<title></title>

</head>

<body>

<form id="form1" runat="server">

<div>

<asp:TextBox ID="name" runat="server"></asp:TextBox><asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>

<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />

</div>

</form>

</body>

</html>

后台代码

[csharp] view
plaincopy

using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using System.Net;

using System.Text;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

public partial class a : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void Button1_Click(object sender, EventArgs e)

{

//如果表单中要发送中文，可以对数据进行编码gb2312/gbk。

Encoding myencode = Encoding.GetEncoding("gb2312");

//然后处理要传的表单数据。

string strpost = HttpUtility.UrlEncode("name_c", myencode) + "=" + HttpUtility.UrlEncode(name.Text, myencode)+"&"

+ HttpUtility.UrlEncode("name_e", myencode) + "=" + HttpUtility.UrlEncode(name.Text+"测试", myencode);

//string strpost = "name_c=" + name.Text + "&" + "name_e=" + name.Text;

//有多个参数可以用"&"拼接。

//接着序列化参数。

byte[] postBytes = Encoding.ASCII.GetBytes(strpost);

//创建请求示例。

HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create("http://localhost:61444/b.aspx");

//下面可以选择请求的方式，标头。

req.Method = "POST";

req.ContentType = "application/x-www-form-urlencoded;charset=gb2312";

req.ContentLength = postBytes.Length;

using (Stream sendStream = req.GetRequestStream())

{

sendStream.Write(postBytes, 0, Convert.ToInt32(req.ContentLength));

}

using(WebResponse wr=req.GetResponse())

{

Stream respStream = wr.GetResponseStream();

using (System.IO.StreamReader reader = new System.IO.StreamReader(respStream, Encoding.GetEncoding("utf-8")))

{

Label1.Text = reader.ReadToEnd();

}

}

}

}

2、b.aspx

[csharp] view
plaincopy

using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

public partial class b : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

string ss = Request.Form["name_c"].ToString() + Request.Form["name_e"].ToString();

Response.Write(ss);

//ExistsFile(Server.MapPath("test/weather.txt"));//检查文件是否存在

////写入文本

//StreamWriter sr = new StreamWriter(Server.MapPath("test/weather.txt"), false, System.Text.Encoding.Default);

//try

//{

// sr.Write(Request.Form["name_c"].ToString());

// sr.Close();

// Response.Write("<script>alert('文件写入成功');</script>");

//}

//catch

//{

// Response.Write("<script>alert('文件写入失败');</script>");

//}

}

//检查文件,如果文件不存在则创建

private void ExistsFile(string FilePath)

{

//if(!File.Exists(FilePath))

//File.Create(FilePath);

//以上写法会报错,详细解释请看下文.........

if (!File.Exists(FilePath))

{

FileStream fs = File.Create(FilePath);

fs.Close();

}

}

}

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