！！！C#高分求借图片上传问题！！

用jsp脚本实现image和打开对话框得到的路径的对应就好了
这个到底怎么写啊

为什么要给你QQ号？私下解决问题有同样问题的其他人就不能从讨论中得到启发了，能解决你的问题的人还需要用这种问题锻炼自己的编程能力？
你的需求浏览器做不到，自己写ActiveX吧。

这是我以前做了一个上传和下载的例子,希望对你有用.<%@ Page Language="C#" AutoEventWireup="true" CodeFile="myPage.aspx.cs" Inherits="myPage" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>院内展示</title>
    <link href="../css/style.css" type="text/css" rel="stylesheet" />    <script language="javascript" type="text/javascript">

   function PreviewPhotoatwidth(photo_file,img_object,imgwidth)
   {
        debugger;
        var fileext=photo_file.value.substring(photo_file.value.lastIndexOf("."),photo_file.value.length);
        fileext=fileext.toLowerCase();
        if ((fileext!='.jpg')&&(fileext!='.gif')&&(fileext!='.jpeg')&&(fileext!='.png')&&(fileext!='.bmp'))

        {

              alert("对不起，系统仅支持标准格式的照片，请您调整格式后重新上传，谢谢！");
              photo_file.focus();
        }
        else
        {

        img_object.src=photo_file.value;

        if (img_object.width>imgwidth)
        {
            img_object.width=imgwidth;

        }

      }
    }

    </script></head>
<body >
    <form id="form1" runat="server" enctype="multipart/form-data" method="post" action="">
        <table width="100%">
            <tr>
                <td style="font-size: 11px;">
                    上传图片：
                </td>
                <td class="contenttext">
                    <input id="ImageFile" type="file" name="ImageFile" runat="server" onchange="javascript:PreviewPhotoatwidth(this,picpreview,800)"
                        style="width: 308px" />
                    <asp:Label ID="ImageFileLabel" runat="server" ForeColor="Red"></asp:Label>
                </td>

                    <td style="font-size: 11px;">
                        图片预览：
                    </td>
                    <td>
                         </td>
                    <td>
                        <asp:Button ID="Button2" runat="server" Text="下载" OnClick="Button2_Click" />
                    </td>
            </tr>
        </table>
        <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />
        <asp:Button ID="Button3" runat="server" OnClick="Button3_Click" Text="Button" />
                        <img id="picpreview" alt="预览"  src=""  /></form>

</body>
</html>using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;public partial class myPage : System.Web.UI.Page
{
    private void DownloadFile()
    {
        string path = Server.MapPath("UploadFiles/07de2121-c906-45e1-8aff-2ce320c12404.jpg");
        //string path = this.ApplicationRootPath + objNetDisk_Resource.ResURL;
        //在你的项目里需要建一个 UploadFiles文件夹        if (!File.Exists(path))
        {
            // 文件没有找到
            //Page.Response.Write ("文件不存在") ;

            //       return;
        }
        else
        {
            System.IO.FileInfo file = new System.IO.FileInfo(path);            // clear the current output content from the buffer
            Response.Clear();
            // add the header that specifies the default filename for the Download/SaveAs dialog
            Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(file.Name, System.Text.Encoding.UTF8));
            // add the header that specifies the file size, so that the browser
            // can show the download progress
            Response.AddHeader("Content-Length", file.Length.ToString());
            // specify that the response is a stream that cannot be read by the
            // client and must be downloaded
            Response.ContentType = "application/octet-stream";
            // send the file stream to the client
            Response.WriteFile(file.FullName);
            // stop the execution of this page
            Response.End();
        }
    }    protected void Page_Load(object sender, EventArgs e)
    {


    }
    protected void Button1_Click(object sender, EventArgs e)
    {

        DateTime CreateDate = DateTime.Now;
        string TrueName = "";
        string RandomName = "";        if (ImageFile.PostedFile.FileName.Length > 0 )
         {
            if (ImageFile.PostedFile.FileName != "")
            {
                string RandomString = Convert.ToString(Guid.NewGuid());
                TrueName = Path.GetFileName(ImageFile.PostedFile.FileName);
                int i = TrueName.LastIndexOf(".");
                string ExtendName = TrueName.Substring(i);
                RandomName = RandomString + ExtendName;
                string filepath = Server.MapPath("~/UploadFiles/" + RandomName);
                    //在你的项目里需要建一个 UploadFiles文件夹                //string FileType = UploadFile.PostedFile.ContentType.ToString();
                //UploadFileName.EndsWith(".exe")
                if (ExtendName != ".jpg" && ExtendName != ".gif" && ExtendName != ".bmp" && ExtendName != ".JPG" && ExtendName != ".GIF" && ExtendName != ".BMP")
                {
                    //Response.Write("<script language=\"javascript\">alert('只能上传jpg，gif，bmp格式的图片！');</script>");
                    ImageFileLabel.Visible = true;
                    ImageFileLabel.Text = "只能上传jpg，gif，bmp格式的图片！";
                    return;
                }
                if (ImageFile.PostedFile.ContentLength > 20280000)
                {
                    //Response.Write("<script language=\"javascript\">alert('上传图片不能超过200k！');</script>");
                    ImageFileLabel.Visible = true;
                    ImageFileLabel.Text = "上传图片不能超过200k";
                    return;
                }
                else
                {
                    ImageFile.PostedFile.SaveAs(filepath);
                }
            }
            else
            {
                ImageFileLabel.Visible = true;
                ImageFileLabel.Text = "必须选择图片";
                return;
            }
        }

                     }
    protected void Button2_Click(object sender, EventArgs e)
    {
        this.DownloadFile();
    }
    protected void Button3_Click(object sender, EventArgs e)
    {
        Page.Response.Clear();
        string path = Server.MapPath("UploadFiles/07de2121-c906-45e1-8aff-2ce320c12404.jpg");
        bool success = Class1.ResponseFile(Page.Request, Page.Response, "1111111111111111", path, 1024000);
        if (!success)
            Response.Write("下载文件出错！");
        Page.Response.End();
    }
}

web下面不使用fileupload是很难实现你要的功能的

就是浏览部分不能实现啊...
其它的都好办
浏览部分不使用fileupload的话,我刚刚上网查了一下,好像没有找到替代的解决办法

大哥那如果用那东西的话怎么写呢？
我可以把浏览部分用CSSS搞成最小用fileupload 该怎么写呢？

用fileupload 该怎么写呢？

SQL Server数据库代码
<%@ Page Language="C#" EnableViewState="true" %><%@ Import Namespace="System.Data.SqlClient" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script runat="server">
  string strCnn = "Persist Security Info=False;User ID=sa;Password=;Initial Catalog=Book;Server=(local);";
  protected void Button1_Click( object sender, EventArgs e )
  {
    System.IO.Stream fileDataStream = FileUpload1.PostedFile.InputStream;    if (fileDataStream.Length < 1)
    {
      Msg.Text = "请选择文件。";
      return;
    }    //得到文件大小
    int fileLength = FileUpload1.PostedFile.ContentLength;    //创建数组
    byte[] fileData = new byte[fileLength];
    //把文件流填充到数组
    fileDataStream.Read(fileData, 0, fileLength);
    //得到文件类型
    string fileType = FileUpload1.PostedFile.ContentType;    //构建数据库连接，SQL语句，创建参数    SqlConnection myConnection = new SqlConnection(strCnn);
    SqlCommand command = new SqlCommand("INSERT INTO UserPhoto (UserName,ContentType,Photo)" +
    "VALUES (@UserName,@ContentType,@Photo)", myConnection);    command.Parameters.AddWithValue("@UserName", TextBox1.Text);
    command.Parameters.AddWithValue("@ContentType", fileType);
    command.Parameters.AddWithValue("@Photo", fileData);    //打开连接，执行查询
    myConnection.Open();
    command.ExecuteNonQuery();
    myConnection.Close();
    Response.Redirect(Request.RawUrl);
  }
  protected void Page_Load( object sender, EventArgs e )
  {    if (!Page.IsPostBack)
    {
      BindGrid();
    }
  }  private void BindGrid( )
  {
    SqlConnection myConnection = new SqlConnection(strCnn);
    SqlCommand myCommand = new SqlCommand("SELECT * FROM UserPhoto Order By id DESC", myConnection);    try
    {
      myConnection.Open();
      GridView1.DataSource = myCommand.ExecuteReader(System.Data.CommandBehavior.CloseConnection);
      GridView1.DataBind();
    }
    catch (Exception SQLexc)
    {
      Response.Write("提取数据时出现错误：" + SQLexc.ToString());
    }
  }
  protected string FormatURL( object strArgument )
  {
    return "ReadImage.aspx?id=" + strArgument.ToString();
  }  </script><html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
  <title>上传文件到数据库</title>
</head>
<body>
  <form id="MengXianhui" runat="server">
    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false">
      <Columns>
        <asp:TemplateField>
          <ItemTemplate>
            <%#Eval("UserName") %>
          </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField>
          <ItemTemplate>
            <img src="<%#FormatURL(Eval("id")) %>" /></ItemTemplate>
        </asp:TemplateField>
      </Columns>
    </asp:GridView>
    <br />
    <br />
    姓名：<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
    <br />
    照片：<asp:FileUpload ID="FileUpload1" runat="server" />
    <asp:Button ID="btnUpload" runat="server" Text="上传" OnClick="Button1_Click"></asp:Button>
    <p>
      <asp:Label ID="Msg" runat="server" ForeColor="Red"></asp:Label></p>
  </form>
</body>
</html>显示图片
<%@ Page Language="C#" %><%@ Import Namespace="System.Data.OleDb" %>
<%@ Import Namespace="System.Data.SqlClient" %>
<script runat="server">  protected void Page_Load( object sender, EventArgs e )
  {
    ////构建数据库连接，SQL语句，创建参数
    //ACCESS数据库使用本注释部分
    //string strCnn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath("Image2Access.mdb");
    //OleDbConnection myConnection = new OleDbConnection(strCnn);
    //OleDbCommand command = new OleDbCommand("select * from Person Where PersonID =" + Request.QueryString["id"], myConnection);
    //myConnection.Open();
    //OleDbDataReader dr = command.ExecuteReader();
    //if (dr.Read())
    //{
    //  Response.Clear();
    //  Response.AddHeader("Content-Type", dr["PersonImageType"].ToString());
    //  Response.BinaryWrite((byte[])dr["PersonImage"]);
    //}
    //dr.Close();
    //myConnection.Dispose();

MSProject开源的ASP.NET论坛V1.3.0
remex 著于2007-7-28 11:04:06
MSProject论坛起源于国际最著名的开源论坛YetAnotherForum，对其的安装步骤、各功能模块及管理界面的进行汉化，并且改进了不少的功能及BUG。其中的在线编辑器里有图片上传的代码

WebClient.UpLoad(...);
好像是这么写忘记了。自己看下

调试易

！！！C#高分求借图片上传问题！！

解决方案 »