winform如何上传图片到服务器

有BS网站一个，然后，我添加产品要通过winform来添加，可是，图片怎么上传到服务器指定目录呢？

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C#初学者，所以提的问题对各位前辈朋友来说可能很简单，也可能问法也不对，非常期待大家的回答……

您好

請參考 WebClient.UploadFile 方法 : 将本地文件上载到具有指定 URI 的资源。

http://msdn.microsoft.com/zh-cn/library/bcfh1hw9(v=VS.80).aspx

您好，

winform上传图片到服务器，您可以根据不同的需求使用不同的方法，之前Stone和小欧的方法都可以，下面还有一些您可以参考一下：

1、通过TextBox上传图片到服务器：http://blog.csdn.net/anya/archive/2009/06/15/4270508.aspx

2、自己写一个SOCKET客户端，和一个SOCKET服务端：http://www.cnblogs.com/steven-mo/archive/2008/06/24/1228857.html

3、使用Uploader.ashx方法：http://hi.baidu.com/longyi98/blog/item/7247b924a0b11b26d507426c.html

希望以上内容对您有所帮助。最后请把对您有帮助的回复“标记为答复”，这样可以更好的帮助论坛里其他和您遇到类似问题的朋友。

谢谢您的理解和支持！

放到同一目录，只记住文件名，然后用一次传上去

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http://feiyun0112.cnblogs.com/

Socket网络传输（C#）

　　如果想要利用C#通过Socket进 行网络传输文件，一般情况下，大家会首先考虑使用.NET自带的Socket.SendFile Method (String)这个方法。不过这个方法没有相应的文件接受方法，而且据说会有8KB的限制。所以，我尝试了另外一种方法，发现效果不错。下面，我就来简 单介绍一下其原理。
　　Socket.Send()和Socket.Receive()方法都是传递byte[]的，所以就要想办法把文件给变成byte[]。一开始试过用 StreamReader来读取string，然后用Encoding来进行编码得到byte[]，接收以后再还原成string写入文件。结果发现不可 行，只有纯文本文件以这种方法传输是正常的。
　　无奈之下，只好另想办法。后来在File类下找到了这两个方法——File.ReadAllBytes()和 File.WriteAllBytes()。试了一下用这两个方法来把文件变成byte[]，再把byte[]还原成文件，结果成功了！（试过了传输图片 和rar压缩文件，都OK！）

　　有兴趣的朋友，可以到这里下载源码：http://download.csdn.net/source/511058（原创代码）

网上有很多方案，起初用时，因为对asp.net不太了解，觉得FTP实现不错，可是后来发现，如果机器在域控下，就会有问题。

一年过去了，asp.net也熟悉了，知道ajax没事应该用ashx，验证码也用ashx，当然这里要说的WinForm上传也应该是ashx了 吧，哈哈，先提供简单思路：

接收文件的asp.net是：Uploader.ashx，相关代码：

<%@ WebHandler Language="C#" Class="Uploader" %>
using System;
using System.IO;
using System.Web;

public class Uploader : IHttpHandler
{
    public void ProcessRequest(HttpContext hc)
    {
        foreach (string fileKey in hc.Request.Files)
        {
            HttpPostedFile file = hc.Request.Files[fileKey];
            file.SaveAs(Path.Combine(hc.Server.MapPath("."), file.FileName));
        }
    }

    public bool IsReusable
    {
        get { return true; }
    }
}

 发送图片或文件的WinForm.cs 相关代码：

System.Net.WebClient myWebClient = new System.Net.WebClient();
myWebClient.UploadFile("http://www.yongfa365.com/Uploader.ashx", "POST", "C:\\WINDOWS\\system32\\cmd.exe");

OK,完了，这样操作后，再也不用管是不是在域控内了，只要能上网，就能上传。够方便吧。

---

如果你要批量上传，还有上传后保存在哪个目录等操作可以参考柳永法 (yongfa365)'Blog写的：

接收文件的asp.net是：Uploader.ashx，相关代码：

<%@ WebHandler Language="C#" Class="Uploader" %>
using System;
using System.IO;
using System.Web;

public class Uploader : IHttpHandler
{
    public void ProcessRequest(HttpContext hc)
    {
        string NowPath = Path.Combine(hc.Server.MapPath("."), hc.Request["path"]);

        if (!Directory.Exists(NowPath))
        {
            Directory.CreateDirectory(NowPath);
        }

        foreach (string fileKey in hc.Request.Files)
        {
            HttpPostedFile file = hc.Request.Files[fileKey];
            string FilePath = Path.Combine(NowPath, file.FileName);
            if (File.Exists(FilePath))
            {
                if (Convert.ToBoolean(hc.Request["overwrite"]))
                {
                    File.Delete(FilePath);
                }
                else
                {
                    continue;
                }
            }
            file.SaveAs(FilePath);
        }
    }

    public bool IsReusable
    {
        get { return true; }
    }
}

 发送图片或文件的WinForm.cs 相关代码：

string url = @"http://www.yongfa365.com/Uploader.ashx?Overwrite=true&PATH=Logs\" + DateTime.Now.ToString("yyyy-MM-dd");
foreach (string file in Directory.GetFiles(item))
{
    System.Net.WebClient myWebClient = new System.Net.WebClient();
    myWebClient.UploadFile(url, "POST", file);
}

Winform如何通过TextBox上传图片到服务器

2009-06-15 15:11 1045人阅读 评论(9) 收藏 举报



      #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.components = new System.ComponentModel.Container();

            this.button1 = new System.Windows.Forms.Button();

            this.textBox1 = new System.Windows.Forms.TextBox();

            this.linkLabel1 = new System.Windows.Forms.LinkLabel();

            this.button2 = new System.Windows.Forms.Button();

            this.txtFileName = new System.Windows.Forms.TextBox();

            this.label3 = new System.Windows.Forms.Label();

            this.txtServerPath = new System.Windows.Forms.TextBox();

            this.label2 = new System.Windows.Forms.Label();

            this.button3 = new System.Windows.Forms.Button();

            this.label1 = new System.Windows.Forms.Label();

            this.timer1 = new System.Windows.Forms.Timer(this.components);

            this.pictureBox1 = new System.Windows.Forms.PictureBox();

            this.button4 = new System.Windows.Forms.Button();

            ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();

            this.SuspendLayout();

            //

            // button1

            //

            this.button1.Location = new System.Drawing.Point(84, 15);

            this.button1.Name = "button1";

            this.button1.Size = new System.Drawing.Size(113, 45);

            this.button1.TabIndex = 0;

            this.button1.Text = "监听";

            this.button1.UseVisualStyleBackColor = true;

            this.button1.Click += new System.EventHandler(this.button1_Click);

            //

            // textBox1

            //

            this.textBox1.Location = new System.Drawing.Point(263, 28);

            this.textBox1.Name = "textBox1";

            this.textBox1.Size = new System.Drawing.Size(292, 21);

            this.textBox1.TabIndex = 1;

            //

            // linkLabel1

            //

            this.linkLabel1.Location = new System.Drawing.Point(144, 266);

            this.linkLabel1.Name = "linkLabel1";

            this.linkLabel1.Size = new System.Drawing.Size(440, 24);

            this.linkLabel1.TabIndex = 15;

            this.linkLabel1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;

            this.linkLabel1.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.linkLabel1_LinkClicked);

            //

            // button2

            //

            this.button2.Location = new System.Drawing.Point(498, 178);

            this.button2.Name = "button2";

            this.button2.Size = new System.Drawing.Size(80, 23);

            this.button2.TabIndex = 14;

            this.button2.Text = "浏览文件…";

            //

            // txtFileName

            //

            this.txtFileName.Location = new System.Drawing.Point(256, 178);

            this.txtFileName.Name = "txtFileName";

            this.txtFileName.Size = new System.Drawing.Size(232, 21);

            this.txtFileName.TabIndex = 12;

            //

            // label3

            //

            this.label3.AutoSize = true;

            this.label3.Font = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(134)));

            this.label3.ForeColor = System.Drawing.Color.DarkBlue;

            this.label3.Location = new System.Drawing.Point(136, 184);

            this.label3.Name = "label3";

            this.label3.Size = new System.Drawing.Size(122, 12);

            this.label3.TabIndex = 13;

            this.label3.Text = "请输入上传文件名：";

            this.label3.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;

            //

            // txtServerPath

            //

            this.txtServerPath.Location = new System.Drawing.Point(256, 154);

            this.txtServerPath.Name = "txtServerPath";

            this.txtServerPath.Size = new System.Drawing.Size(320, 21);

            this.txtServerPath.TabIndex = 9;

            this.txtServerPath.Text = "http://www.x.com/WeUpload/";

            //

            // label2

            //

            this.label2.AutoSize = true;

            this.label2.Font = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(134)));

            this.label2.ForeColor = System.Drawing.Color.Navy;

            this.label2.Location = new System.Drawing.Point(136, 158);

            this.label2.Name = "label2";

            this.label2.Size = new System.Drawing.Size(122, 12);

            this.label2.TabIndex = 10;

            this.label2.Text = "请输入服务器地址：";

            this.label2.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;

            //

            // button3

            //

            this.button3.Location = new System.Drawing.Point(320, 210);

            this.button3.Name = "button3";

            this.button3.Size = new System.Drawing.Size(75, 23);

            this.button3.TabIndex = 11;

            this.button3.Text = "上载文件";

            this.button3.Click += new System.EventHandler(this.button3_Click);

            this.button3.MouseDown += new System.Windows.Forms.MouseEventHandler(this.button3_MouseDown);

            //

            // label1

            //

            this.label1.ForeColor = System.Drawing.Color.Red;

            this.label1.Location = new System.Drawing.Point(136, 242);

            this.label1.Name = "label1";

            this.label1.Size = new System.Drawing.Size(448, 16);

            this.label1.TabIndex = 8;

            this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;

            //

            // timer1

            //

            this.timer1.Enabled = true;

            this.timer1.Interval = 35000;

            this.timer1.Tick += new System.EventHandler(this.timer1_Tick);

            //

            // pictureBox1

            //

            this.pictureBox1.Location = new System.Drawing.Point(387, 74);

            this.pictureBox1.Name = "pictureBox1";

            this.pictureBox1.Size = new System.Drawing.Size(100, 50);

            this.pictureBox1.TabIndex = 16;

            this.pictureBox1.TabStop = false;

            //

            // button4

            //

            this.button4.Location = new System.Drawing.Point(319, 266);

            this.button4.Name = "button4";

            this.button4.Size = new System.Drawing.Size(75, 23);

            this.button4.TabIndex = 17;

            this.button4.Text = "打水印";

            this.button4.UseVisualStyleBackColor = true;

            this.button4.Click += new System.EventHandler(this.button4_Click);

            //

            // Form1

            //

            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);

            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;

            this.ClientSize = new System.Drawing.Size(662, 317);

            this.Controls.Add(this.button4);

            this.Controls.Add(this.pictureBox1);

            this.Controls.Add(this.linkLabel1);

            this.Controls.Add(this.button2);

            this.Controls.Add(this.txtFileName);

            this.Controls.Add(this.label3);

            this.Controls.Add(this.txtServerPath);

            this.Controls.Add(this.label2);

            this.Controls.Add(this.button3);

            this.Controls.Add(this.label1);

            this.Controls.Add(this.textBox1);

            this.Controls.Add(this.button1);

            this.Name = "Form1";

            this.Text = "Form1";

            this.Resize += new System.EventHandler(this.Form1_Resize);

            ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();

            this.ResumeLayout(false);

            this.PerformLayout();



        }



        #endregion



        private System.Windows.Forms.Button button1;

        private System.Windows.Forms.TextBox textBox1;

        private System.Windows.Forms.LinkLabel linkLabel1;

        private System.Windows.Forms.Button button2;

        private System.Windows.Forms.TextBox txtFileName;

        private System.Windows.Forms.Label label3;

        private System.Windows.Forms.TextBox txtServerPath;

        private System.Windows.Forms.Label label2;

        private System.Windows.Forms.Button button3;

        private System.Windows.Forms.Label label1;

        private System.Windows.Forms.Timer timer1;

        private System.Windows.Forms.PictureBox pictureBox1;

        private System.Windows.Forms.Button button4;



 



 



 



后台代码:



using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using System.Diagnostics;

using System.Data.SqlClient;

using System.Drawing.Imaging;

using System.Net;

using System.IO;





using System.Runtime.InteropServices;

using System.Net.Sockets;

using Microsoft.Win32;



    #region 上传图片到服务器

        private void button3_Click(object sender, EventArgs e)

        {

            // 需要注意的是：txtServerPath文件夹有匿名可写的权限。

            // 可以自己定义新文件名字

            if (txtFileName.Text.Trim() == "" || txtServerPath.Text.Trim() == "")

            {

                MessageBox.Show("请输入你要上载的文件名字！", "错误：", MessageBoxButtons.OK,

                                                                 MessageBoxIcon.Information);

            }

            else

            {

                /// 得到文件名，文件扩展名字，服务器路径

                string fileNamePath = txtFileName.Text.Trim();

                string uriString = txtServerPath.Text.Trim();

                string fileName = fileNamePath.Substring(fileNamePath.LastIndexOf("//") + 1);

                string fileNameExt = fileName.Substring(fileName.LastIndexOf(".") + 1);

                if (uriString.EndsWith("/") == false) uriString = uriString + "/";



                uriString = uriString + fileName;

                /// 创建WebClient实例

                WebClient myWebClient = new WebClient();

                myWebClient.Credentials = CredentialCache.DefaultCredentials;



                // 要上传的文件

                FileStream fs = new FileStream(this.txtFileName.Text, FileMode.Open, FileAccess.Read);

                //FileStream fs = OpenFile();

                BinaryReader r = new BinaryReader(fs);

                try

                {

                    //使用UploadFile方法可以用下面的格式

                    //myWebClient.UploadFile(uriString,"PUT",fileNamePath);

                    byte[] postArray = r.ReadBytes((int)fs.Length);

                    Stream postStream = myWebClient.OpenWrite(uriString, "PUT");

                    if (postStream.CanWrite)

                    {

                        postStream.Write(postArray, 0, postArray.Length);

                        label1.Text = fileName + "上传成功！";

                    }

                    else

                    {

                        label1.Text = "文件目前不可写！";

                    }

                    postStream.Close();

                    linkLabel1.Text = "查看上载的文件";

                    for (int i = linkLabel1.Links.Count - 1; i > -1; i--)

                        linkLabel1.Links.Remove(linkLabel1.Links[i]);

                    linkLabel1.Links.Add(0, linkLabel1.Text.Length, uriString);

                }

                catch (WebException errMsg)

                {

                    label1.Text = "上传失败：" + errMsg.Message;

                }

            }

        }



        private void linkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)

        {

            this.WindowState = FormWindowState.Minimized;

            this.linkLabel1.Links[linkLabel1.Links.IndexOf(e.Link)].Visited = true;

            string target = e.Link.LinkData as string;

            if (null != target)

            {

                System.Diagnostics.Process.Start(target);

            }

            else

            {

                MessageBox.Show("请用浏览器访问：" + target);

            }

        }



        private void Form1_Resize(object sender, EventArgs e)

        {

            if (this.WindowState == FormWindowState.Maximized) this.WindowState = FormWindowState.Normal;

        }



        private void button3_MouseDown(object sender, MouseEventArgs e)

        {

            if (txtFileName.Text.Trim() != "" && txtServerPath.Text.Trim() != "")

                label1.Text = "正在上传文件，请稍侯……！";

        }

        #endregion