Asp.Net模拟表单提交数据和上传文件的实现代码

using System;
using System.Web;
using System.IO;
using System.Net;
using System.Text;
using System.Collections;
namespace UploadData.Common
{
 public class CreateBytes
 {
 Encoding encoding = Encoding.UTF8;
 public byte[] JoinBytes(ArrayList byteArrays)
 {
 int length = 0;
 int readLength = 0;
 // 加上结束边界
 string endBoundary = Boundary + "-- ";
 byte[] endBoundaryBytes = encoding.GetBytes(endBoundary);
 byteArrays.Add(endBoundaryBytes);
 foreach (byte[] b in byteArrays)
 {
 length += b.Length;
 }
 byte[] bytes = new byte[length];
 // 遍历复制
 foreach (byte[] b in byteArrays)
 {
 b.CopyTo(bytes, readLength);
 readLength += b.Length;
 }
 return bytes;
 }
 public bool UploadData(string uploadUrl, byte[] bytes, out byte[] responseBytes)
 {
 WebClient webClient = new WebClient();
 webClient.Headers.Add("Content-Type", ContentType);
 try
 {
 responseBytes = webClient.UploadData(uploadUrl, bytes);
 return true;
 }
 catch (WebException ex)
 {
 Stream resp = ex.Response.GetResponseStream();
 responseBytes = new byte[ex.Response.ContentLength];
 resp.Read(responseBytes, 0, responseBytes.Length);
 }
 return false;
 }
 /// 获取普通表单区域二进制数组
 public byte[] CreateFieldData(string fieldName, string fieldValue)
 {
 string textTemplate = Boundary + " Content-Disposition: form-data; name="{0}" {1} ";
 string text = String.Format(textTemplate, fieldName, fieldValue);
 byte[] bytes = encoding.GetBytes(text);
 return bytes;
 }
 public byte[] CreateFieldData(string fieldName, string filename, string contentType, byte[] fileBytes)
 {
 string end = " ";
 string textTemplate = Boundary + " Content-Disposition: form-data; name="{0}"; filename="{1}" Content-Type: {2} ";
 // 头数据
 string data = String.Format(textTemplate, fieldName, filename, contentType);
 byte[] bytes = encoding.GetBytes(data);
 // 尾数据
 byte[] endBytes = encoding.GetBytes(end);
 // 合成后的数组
 byte[] fieldData = new byte[bytes.Length + fileBytes.Length + endBytes.Length];
 bytes.CopyTo(fieldData, 0); // 头数据
 fileBytes.CopyTo(fieldData, bytes.Length); // 文件的二进制数据
 endBytes.CopyTo(fieldData, bytes.Length + fileBytes.Length); // 
 return fieldData;
 }
 public string Boundary
 {
 get
 {
 string[] bArray, ctArray;
 string contentType = ContentType;
 ctArray = contentType.Split(';');
 if (ctArray[0].Trim().ToLower() == "multipart/form-data")
 {
 bArray = ctArray[1].Split('=');
 return "--" + bArray[1];
 }
 return null;
 }
 }
 public string ContentType
 {
 get
 {
 if (HttpContext.Current == null)
 {
 return "multipart/form-data; boundary=---------------------------7d5b915500cee";
 }
 return HttpContext.Current.Request.ContentType;
 }
 }
 }
}
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using UploadData.Common;
using System.IO;
namespace UploadDataWin
{
 public class frmUpload : System.Windows.Forms.Form
 {
 private System.Windows.Forms.Label lblAmigoToken;
 private System.Windows.Forms.TextBox txtAmigoToken;
 private System.Windows.Forms.Label lblFilename;
 private System.Windows.Forms.TextBox txtFilename;
 private System.Windows.Forms.Button btnBrowse;
 private System.Windows.Forms.TextBox txtFileData;
 private System.Windows.Forms.Label lblFileData;
 private System.Windows.Forms.Button btnUpload;
 private System.Windows.Forms.OpenFileDialog openFileDialog1;
 private System.Windows.Forms.TextBox txtResponse;
 private System.ComponentModel.Container components = null;
 public frmUpload()
 {
 InitializeComponent();
 }
 protected override void Dispose(bool disposing)
 {
 if (disposing)
 {
 if (components != null)
 {
 components.Dispose();
 }
 }
 base.Dispose(disposing);
 }
 private void InitializeComponent()
 {
 this.lblAmigoToken = new System.Windows.Forms.Label();
 this.txtAmigoToken = new System.Windows.Forms.TextBox();
 this.lblFilename = new System.Windows.Forms.Label();
 this.txtFilename = new System.Windows.Forms.TextBox();
 this.btnBrowse = new System.Windows.Forms.Button();
 this.txtFileData = new System.Windows.Forms.TextBox();
 this.lblFileData = new System.Windows.Forms.Label();
 this.btnUpload = new System.Windows.Forms.Button();
 this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
 this.txtResponse = new System.Windows.Forms.TextBox();
 this.SuspendLayout();
 // 
 // lblAmigoToken
 // 
 this.lblAmigoToken.Location = new System.Drawing.Point(40, 48);
 this.lblAmigoToken.Name = "lblAmigoToken";
 this.lblAmigoToken.Size = new System.Drawing.Size(72, 23);
 this.lblAmigoToken.TabIndex = 0;
 this.lblAmigoToken.Text = "AmigoToken";
 // 
 // txtAmigoToken
 // 
 this.txtAmigoToken.Location = new System.Drawing.Point(120, 48);
 this.txtAmigoToken.Name = "txtAmigoToken";
 this.txtAmigoToken.Size = new System.Drawing.Size(248, 21);
 this.txtAmigoToken.TabIndex = 1;
 this.txtAmigoToken.Text = "";
 // 
 // lblFilename
 // 
 this.lblFilename.Location = new System.Drawing.Point(40, 96);
 this.lblFilename.Name = "lblFilename";
 this.lblFilename.Size = new System.Drawing.Size(80, 23);
 this.lblFilename.TabIndex = 2;
 this.lblFilename.Text = "Filename";
 // 
 // txtFilename
 // 
 this.txtFilename.Location = new System.Drawing.Point(120, 96);
 this.txtFilename.Name = "txtFilename";
 this.txtFilename.Size = new System.Drawing.Size(248, 21);
 this.txtFilename.TabIndex = 3;
 this.txtFilename.Text = "";
 // 
 // btnBrowse
 // 
 this.btnBrowse.Location = new System.Drawing.Point(296, 144);
 this.btnBrowse.Name = "btnBrowse";
 this.btnBrowse.TabIndex = 4;
 this.btnBrowse.Text = "浏览";
 this.btnBrowse.Click += new System.EventHandler(this.btnBrowse_Click);
 // 
 // txtFileData
 // 
 this.txtFileData.Location = new System.Drawing.Point(120, 144);
 this.txtFileData.Name = "txtFileData";
 this.txtFileData.Size = new System.Drawing.Size(168, 21);
 this.txtFileData.TabIndex = 5;
 this.txtFileData.Text = "";
 // 
 // lblFileData
 // 
 this.lblFileData.Location = new System.Drawing.Point(40, 144);
 this.lblFileData.Name = "lblFileData";
 this.lblFileData.Size = new System.Drawing.Size(72, 23);
 this.lblFileData.TabIndex = 6;
 this.lblFileData.Text = "FileData";
 // 
 // btnUpload
 // 
 this.btnUpload.Location = new System.Drawing.Point(48, 184);
 this.btnUpload.Name = "btnUpload";
 this.btnUpload.TabIndex = 7;
 this.btnUpload.Text = "Upload";
 this.btnUpload.Click += new System.EventHandler(this.btnUpload_Click);
 // 
 // txtResponse
 // 
 this.txtResponse.Location = new System.Drawing.Point(136, 184);
 this.txtResponse.Multiline = true;
 this.txtResponse.Name = "txtResponse";
 this.txtResponse.Size = new System.Drawing.Size(248, 72);
 this.txtResponse.TabIndex = 8;
 this.txtResponse.Text = "";
 // 
 // frmUpload
 // 
 this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
 this.ClientSize = new System.Drawing.Size(400, 269);
 this.Controls.Add(this.txtResponse);
 this.Controls.Add(this.btnUpload);
 this.Controls.Add(this.lblFileData);
 this.Controls.Add(this.txtFileData);
 this.Controls.Add(this.btnBrowse);
 this.Controls.Add(this.txtFilename);
 this.Controls.Add(this.lblFilename);
 this.Controls.Add(this.txtAmigoToken);
 this.Controls.Add(this.lblAmigoToken);
 this.Name = "frmUpload";
 this.Text = "frmUpload";
 this.ResumeLayout(false);
 }
 [STAThread]
 static void Main()
 {
 Application.Run(new frmUpload());
 }
 private void btnUpload_Click(object sender, System.EventArgs e)
 {
 // 非空检验
 if (txtAmigoToken.Text.Trim() == "" || txtFilename.Text == "" || txtFileData.Text.Trim() == "")
 {
 MessageBox.Show("Please fill data");
 return;
 }
 // 所要上传的文件路径
 string path = txtFileData.Text.Trim();
 // 检查文件是否存在
 if (!File.Exists(path))
 {
 MessageBox.Show("{0} does not exist!", path);
 return;
 }
 // 读文件流
 FileStream fs = new FileStream(path, FileMode.Open,
 FileAccess.Read, FileShare.Read);
 // 这部分需要完善
 string ContentType = "application/octet-stream";
 byte[] fileBytes = new byte[fs.Length];
 fs.Read(fileBytes, 0, Convert.ToInt32(fs.Length));
 // 生成需要上传的二进制数组
 CreateBytes cb = new CreateBytes();
 // 所有表单数据
 ArrayList bytesArray = new ArrayList();
 // 普通表单
 bytesArray.Add(cb.CreateFieldData("FileName", txtFilename.Text));
 bytesArray.Add(cb.CreateFieldData("AmigoToken", txtAmigoToken.Text));
 // 文件表单
 bytesArray.Add(cb.CreateFieldData("FileData", path
 , ContentType, fileBytes));
 // 合成所有表单并生成二进制数组
 byte[] bytes = cb.JoinBytes(bytesArray);
 // 返回的内容
 byte[] responseBytes;
 // 上传到指定Url
 bool uploaded = cb.UploadData("http://localhost/UploadData/UploadAvatar.aspx", bytes, out responseBytes);
 // 将返回的内容