ASP.NET + C# 如何制作上传图片的功能呢?

string filepath = FileUpload1.PostedFile.FileName;
        string filename = filepath.Substring(filepath.LastIndexOf("\\"));
        string fileEx = filepath.Substring(filepath.LastIndexOf(".")+1);
        string serverpath = "C:/aa/upload/" + filename;
        string dbpath = "\\upload\\" + filename;
        if (fileEx == "jpg" || fileEx == "bmp" || fileEx == "gif")
        {
            FileUpload1.PostedFile.SaveAs(serverpath);
            Response.Write("成功");
            Image1.ImageUrl = @"..\aa\upload\" + filename;
        }
        else
        {
            Response.Write("失敗");
        }
        string sql = "insert into gc_carno(id,carno,model,carphoto) values(100,'"+TextBox1.Text+"','"+TextBox2.Text+"','"+dbpath+"')";
        OracleConnection conn = sda.getoracleconnection();
        conn.Open();
        OracleCommand cmd = new OracleCommand(sql,conn);        int i = cmd.ExecuteNonQuery();
        if (i == 1)
        {
            Response.Write("<script language='javascript'>alert('添加成功')</script>");
        }
        else
        {
            Response.Write("<script language='javascript'>alert('添加失敗')</script>");
        }

做过java版本的,C#的还没有尝试过.

public void GenerateThumbNail(string sPhysicalPath,string sOrgFileName,
                                                                string sThumbNailFileName,ImageFormat oFormat)
       {            try
            {

                   System.Drawing.Image oImg = System.Drawing.Image.FromFile(sPhysicalPath + @"\" + sOrgFileName);                    System.Drawing.Image oThumbNail = new Bitmap(this.ThumbNailSize.Width,
                                                                                                                 this.ThumbNailSize.Height, oImg.PixelFormat);                   Graphics oGraphic =  Graphics.FromImage(oThumbNail);                   oGraphic.CompositingQuality = CompositingQuality.HighQuality ;                   oGraphic.SmoothingMode = SmoothingMode.HighQuality ;                   oGraphic.InterpolationMode = InterpolationMode.HighQualityBicubic ;                   Rectangle oRectangle = new Rectangle(0, 0, this.ThumbNailSize.Width, this.ThumbNailSize.Height);                   oGraphic.DrawImage(oImg, oRectangle);

                   oThumbNail.Save(sPhysicalPath + @"\" + sThumbNailFileName,oFormat);

                   oImg.Dispose();             }
            catch (Exception)  { }       }

<%@ Page Language="C#" ContentType="text/html" ResponseEncoding="gb2312"   validateRequest="false"%>
<script language="C#" runat="server">
public void DoUpLoad(Object sender,EventArgs e)
{
  if(UploadFiles1.Value=="")
  {
show.Text="Small pictrue Can't be empty!";
  }
  else
  {
    if(UploadFiles2.Value=="")
    {
show.Text="Big pictrue Can't be empty!";
    }
else
{
        int FileCount=Request.Files.Count;
string cun;
        for(int i=0;i<FileCount;i++)
        {
          HttpPostedFile hpf=Request.Files[i];
  if(hpf.ContentLength>200000)
          {
   show.Text="The files can't be more than 200KB!";
       break;
          }
      else
      {
      hpf.SaveAs(Server.MapPath("./uploadphoto/")+"\\"+DateTime.Now.ToString("yyyyMMddHHmms")+i+".jpg");
      cun="uploadphoto/"+DateTime.Now.ToString("yyyyMMddHHmms");
  showOK(cun);
          }
}
}
  }
}
public void showOK(string neirong)
{
  tu_small.Text=neirong+"0.jpg";
  tu_big.Text=neirong+"1.jpg";
  showjg.Text="The pictures's way must not be modified,please do not renovate the web page!";
  show.Text="";
}
</script>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title></title>
<link href="../images/new.css" rel="stylesheet" type="text/css">
<style type="text/css">

</style>
</head>
<body>
<table width="100%"  border="0" cellspacing="0" cellpadding="0">
  <tr>
    <td width="4%" height="44"> </td>
    <td width="94%" valign="middle"><span class="style1">Add new product  →</span></td>
    <td width="2%"> </td>
  </tr>
  <tr>
    <td height="248"> </td>
    <td valign="top" bordercolor="#55A0FF"> <table width="100%" border="0" cellspacing="1" cellpadding="0">
<form runat="server">
      <tr>
        <td width="12%">Upload pictrue </td>
        <td width="88%" colspan="4"><table width="100%" height="41" border="0" cellpadding="0" cellspacing="0">
          <tr>
            <td width="13%" align="center">Small one </td>
            <td width="37%"><input type="file" id="UploadFiles1" runat="server"></td>
            <td width="7%" rowspan="2" align="center">
<input type="submit" value="UpLoad" OnServerClick="DoUpLoad" runat="server" style="width:50; height:40; background-color: #000000;color:#ffffff;"></td>
            <td width="43%" rowspan="2">
<asp:Label ID="show" runat="server" ForeColor="#009900"/> </td>
          </tr>
          <tr>
            <td align="center">Big one</td>
            <td><input type="file" id="UploadFiles2" runat="server"></td>
            </tr>
        </table></td>
        </tr>
      <tr>
        <td colspan="5">
<table width="100%"  border="0" cellspacing="1" cellpadding="0">
                <tr>
                  <td width="51%" height="24">
     Small one' way :                     <asp:Label ID="tu_small" runat="server"/><br>
                     Big one' way :                     <asp:Label ID="tu_big" runat="server"/>                    </td>
                  <td width="49%"><asp:Label ID="showjg" runat="server" ForeColor="#CC0000"/></td>
                </tr>
            </table> </td>
        </tr>
      <tr valign="top">
        <td height="168" colspan="5"><table width="100%" border="0" cellspacing="0" cellpadding="0">
          <tr>
            <td height="1" colspan="2" bgcolor="#000000"></td>
          </tr>
          <tr>
            <td width="67%" height="278" align="left" valign="middle"><br>
                </td>
            <td width="33%" align="left" valign="top"> 

            </td>
          </tr>
        </table></td>
      </tr>
</form>
    </table> </td>
    <td> </td>
  </tr>
  <tr>
    <td> </td>
    <td> </td>
    <td> </td>
  </tr>
</table>
</body>
</html>

后台:
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;public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {    }
    protected void bt_upload_Click(object sender, EventArgs e)
    {
        try
        {
            if (FileUpload1.PostedFile.FileName == "")
            {
                this.lb_info.Text = "请选择文件！";
            }
            else
            {
                string filepath = FileUpload1.PostedFile.FileName;
                string filename = filepath.Substring(filepath.LastIndexOf("\\") + 1);
                string serverpath = Server.MapPath("images/") + filename; //这里设置文件的保存路径
                FileUpload1.PostedFile.SaveAs(serverpath);
                this.lb_info.Text = "上传成功！";
            }
        }
        catch (Exception ex)
        {
            this.lb_info.Text = "上传发生错误！原因是：" + ex.ToString();
        }
    }
}前台:
<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %><!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 runat="server">
    <title>无标题页</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
     <table style="width: 343px">
            <tr>
                <td style="width: 100px">
                    单文件上传</td>
                <td style="width: 100px">
                </td>
            </tr>
            <tr>
                <td style="width: 100px">
                    <asp:FileUpload ID="FileUpload1" runat="server" Width="475px" />
                    </td>
                <td style="width: 100px">
                    <asp:Button ID="bt_upload" runat="server" OnClick="bt_upload_Click" Text="上传" /></td>
            </tr>
            <tr>
                <td style="width: 100px; height: 21px;">
                    <asp:Label ID="lb_info" runat="server" ForeColor="Red" Width="183px"></asp:Label></td>
                <td style="width: 100px; height: 21px">
                </td>
            </tr>
        </table>    </div>
    </form>
</body>
</html>
还要多文件上传吗?我这有

xiandawang() :
你的程序里public 后面的partial什么意思?
好像不对吧?
怎么出错?

Partial 关键字可用于下面的上下文中：Class 语句 Structure 语句
msdn有啊

哦,我用的是2003,好像不能用Partial关键字

你把public partial class _Default : System.Web.UI.Page这句去掉试试
看2003行不

string serverpath = Server.MapPath("images/") + filename; //这里设置文件的保存路径
这句是说要在项目里加个名为images的文件夹

public partial class _Default : System.Web.UI.Page只要在2005里新建个asp.net项目就自动生成的,不是我写的.2003是没有,我记得.

把class也去掉?
那怎么行呢
你把你的Msn给我,我晚上问你吧,这会要下班了

public partial class _Default : System.Web.UI.Page这个整句都去掉吧,我记得2003里没自动生成这句,这个2005自动生成的

请参考:http://www.xproer.com/bbs/revert.aspx?fid=5&tid=656

调试易

ASP.NET + C# 如何制作上传图片的功能呢?

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