C# 上传 下载网络文件

using System;using System.Drawing;using System.Collections;using System.ComponentModel;using System.Windows.Forms;using System.Data;using System.Net;namespace Network{/// <summary>/// Form1 的摘要说明。/// </summary>public class Form1 : System.Windows.Forms.Form{private System.Windows.Forms.GroupBox groupBox1;private System.Windows.Forms.TextBox textBox2;private System.Windows.Forms.Label label2;private System.Windows.Forms.TextBox textBox1;private System.Windows.Forms.Label label1;private System.Windows.Forms.Button button1;private System.Windows.Forms.Button button2;private System.Windows.Forms.GroupBox groupBox2;private System.Windows.Forms.Button button3;private System.Windows.Forms.Button button4;private System.Windows.Forms.TextBox textBox3;private System.Windows.Forms.Label label3;private System.Windows.Forms.TextBox textBox4;private System.Windows.Forms.Label label4;private System.Windows.Forms.OpenFileDialog openFileDialog1;private System.Windows.Forms.SaveFileDialog saveFileDialog1;/// <summary>/// 必需的设计器变量。/// </summary>private System.ComponentModel.Container components = null;public Form1(){//// Windows 窗体设计器支持所必需的//InitializeComponent();//// TODO: 在 InitializeComponent 调用后添加任何构造函数代码//}/// <summary>/// 清理所有正在使用的资源。/// </summary>protected override void Dispose( bool disposing ){if( disposing ){if (components != null) {components.Dispose();}}base.Dispose( disposing );}#region Windows 窗体设计器生成的代码/// <summary>/// 设计器支持所需的方法 - 不要使用代码编辑器修改/// 此方法的内容。/// </summary>private void InitializeComponent(){this.groupBox1 = new System.Windows.Forms.GroupBox();this.textBox2 = new System.Windows.Forms.TextBox();this.label2 = new System.Windows.Forms.Label();this.textBox1 = new System.Windows.Forms.TextBox();this.label1 = new System.Windows.Forms.Label();this.button1 = new System.Windows.Forms.Button();this.button2 = new System.Windows.Forms.Button();this.groupBox2 = new System.Windows.Forms.GroupBox();this.button3 = new System.Windows.Forms.Button();this.button4 = new System.Windows.Forms.Button();this.textBox3 = new System.Windows.Forms.TextBox();this.label3 = new System.Windows.Forms.Label();this.textBox4 = new System.Windows.Forms.TextBox();this.label4 = new System.Windows.Forms.Label();this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();this.saveFileDialog1 = new System.Windows.Forms.SaveFileDialog();this.groupBox1.SuspendLayout();this.groupBox2.SuspendLayout();this.SuspendLayout();// // groupBox1// this.groupBox1.Controls.Add(this.button2);this.groupBox1.Controls.Add(this.button1);this.groupBox1.Controls.Add(this.textBox2);this.groupBox1.Controls.Add(this.label2);this.groupBox1.Controls.Add(this.textBox1);this.groupBox1.Controls.Add(this.label1);this.groupBox1.Location = new System.Drawing.Point(8, 8);this.groupBox1.Name = "groupBox1";this.groupBox1.Size = new System.Drawing.Size(328, 120);this.groupBox1.TabIndex = 0;this.groupBox1.TabStop = false;this.groupBox1.Text = "下载文件";// // textBox2// this.textBox2.BackColor = System.Drawing.SystemColors.ActiveCaptionText;this.textBox2.Location = new System.Drawing.Point(16, 88);this.textBox2.Name = "textBox2";this.textBox2.Size = new System.Drawing.Size(296, 21);this.textBox2.TabIndex = 7;this.textBox2.Text = "";// // label2// this.label2.Location = new System.Drawing.Point(16, 64);this.label2.Name = "label2";this.label2.Size = new System.Drawing.Size(72, 16);this.label2.TabIndex = 6;this.label2.Text = "下载网址：";// // textBox1// this.textBox1.Location = new System.Drawing.Point(16, 40);this.textBox1.Name = "textBox1";this.textBox1.Size = new System.Drawing.Size(296, 21);this.textBox1.TabIndex = 5;this.textBox1.Text = "";// // label1// this.label1.Location = new System.Drawing.Point(16, 24);this.label1.Name = "label1";this.label1.Size = new System.Drawing.Size(80, 16);this.label1.TabIndex = 4;this.label1.Text = "保存文件名：";// // button1// this.button1.Location = new System.Drawing.Point(232, 16);this.button1.Name = "button1";this.button1.Size = new System.Drawing.Size(80, 23);this.button1.TabIndex = 8;this.button1.Text = "浏览";this.button1.Click = new System.EventHandler(this.button1_Click_1);// // button2// this.button2.Location = new System.Drawing.Point(232, 64);this.button2.Name = "button2";this.button2.Size = new System.Drawing.Size(80, 23);this.button2.TabIndex = 9;this.button2.Text = "下载";this.button2.Click = new System.EventHandler(this.button2_Click);// // groupBox2// this.groupBox2.Controls.Add(this.button3);this.groupBox2.Controls.Add(this.button4);this.groupBox2.Controls.Add(this.textBox3);this.groupBox2.Controls.Add(this.label3);this.groupBox2.Controls.Add(this.textBox4);this.groupBox2.Controls.Add(this.label4);this.groupBox2.Location = new System.Drawing.Point(8, 136);this.groupBox2.Name = "groupBox2";this.groupBox2.Size = new System.Drawing.Size(328, 120);this.groupBox2.TabIndex = 1;this.groupBox2.TabStop = false;this.groupBox2.Text = "上载文件";// // button3// this.button3.Location = new System.Drawing.Point(232, 64);this.button3.Name = "button3";this.button3.Size = new System.Drawing.Size(80, 23);this.button3.TabIndex = 9;this.button3.Text = "上载";this.button3.Click = new System.EventHandler(this.button3_Click);// // button4// this.button4.Location = new System.Drawing.Point(232, 16);this.button4.Name = "button4";this.button4.Size = new System.Drawing.Size(80, 23);this.button4.TabIndex = 8;this.button4.Text = "浏览";this.button4.Click = new System.EventHandler(this.button4_Click);// // textBox3// this.textBox3.BackColor = System.Drawing.SystemColors.ActiveCaptionText;this.textBox3.Location = new System.Drawing.Point(16, 40);this.textBox3.Name = "textBox3";this.textBox3.Size = new System.Drawing.Size(296, 21);this.textBox3.TabIndex = 7;this.textBox3.Text = "";// // label3// this.label3.Location = new System.Drawing.Point(16, 64);this.label3.Name = "label3";this.label3.Size = new System.Drawing.Size(72, 16);this.label3.TabIndex = 6;this.label3.Text = "上载网址：";// // textBox4// this.textBox4.Location = new System.Drawing.Point(16, 88);this.textBox4.Name = "textBox4";this.textBox4.Size = new System.Drawing.Size(296, 21);this.textBox4.TabIndex = 5;this.textBox4.Text = "";// // label4// this.label4.Location = new System.Drawing.Point(16, 24);this.label4.Name = "label4";this.label4.Size = new System.Drawing.Size(80, 16);this.label4.TabIndex = 4;this.label4.Text = "上载文件名：";// // Form1// this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);this.ClientSize = new System.Drawing.Size(344, 262);this.Controls.Add(this.groupBox2);this.Controls.Add(this.groupBox1);this.MaximizeBox = false;this.Name = "Form1";this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;this.Text = "演示上下载文件";this.groupBox1.ResumeLayout(false);this.groupBox2.ResumeLayout(false);this.ResumeLayout(false);}#endregion/// <summary>/// 应用程序的主入口点。/// </summary>[STAThread]static void Main() {Application.Run(new Form1());}private void button1_Click_1(object sender, System.EventArgs e){//浏览保存文件if(this.saveFileDialog1.ShowDialog()==DialogResult.OK){this.textBox1.Text=this.saveFileDialog1.FileName;}}private void button4_Click(object sender, System.EventArgs e){//浏览上载文件if(this.openFileDialog1.ShowDialog()==DialogResult.OK){this.textBox3.Text=this.openFileDialog1.FileName;}}private void button2_Click(object sender, System.EventArgs e){//下载文件if(this.textBox1.Text==""|this.textBox2.Text=="")return;WebClient MyClient=new WebClient();string URL=this.textBox2.Text;string SaveFileName=this.textBox1.Text;try{MyClient.DownloadFile(URL , SaveFileName);MessageBox.Show("文件下载成功！","信息提示",MessageBoxButtons.OK,MessageBoxIcon.Information);}catch(Exception Err){MessageBox.Show("文件下载失败！错误是：" Err.Message,"信息提示",MessageBoxButtons.OK,MessageBoxIcon.Information);}}private void button3_Click(object sender, System.EventArgs e){//上载文件if(this.textBox3.Text==""|this.textBox4.Text=="")return;WebClient MyClient=new WebClient();string URL=this.textBox3.Text;string FileName=this.textBox4.Text;byte[] MyResponseArray=null;try{MyResponseArray = MyClient.UploadFile(URL,FileName);MessageBox.Show("文件上载成功！","信息提示",MessageBoxButtons.OK,MessageBoxIcon.Information);}catch(Exception Err){MessageBox.Show("文件上载失败！错误是：" Err.Message,"信息提示",MessageBoxButtons.OK,MessageBoxIcon.Information);}finally{MessageBox.Show("\n服务器的回复为: \n" System.Text.Encoding.ASCII.GetString(MyResponseArray));}}}}