ASP.NET网站如何实现客户端上传文件功能

Question

ASP.NET网站如何实现客户端上传文件功能 最好是有原代码， 谢谢！！！

Answer 1

upImage是上传文件那个控件的IDif(upImage.HasFile)
{
  string filePath="~/UploadImages/"+upImage.FileName;
  upImage.SaveAs(MapPath(filePath));
}

Answer 2

多看看.net中的服务端上传的控件，都可以实现此功能 

Answer 3

 string savepath;
        string save = "aa";
        save.Trim();        string filename = DateTime.Now.ToString("yyMMddHHmmssfff") + FileUpload1.FileName;
        this.lujing.Text = filename;
        savepath = Server.MapPath("~/pic") + "\\" + filename;
        save += filename;
        FileUpload1.SaveAs(savepath);

Answer 4

给你个上传图片的实例
<table style="width: 100%">        <tr>            <td>                <asp:ValidationSummary ID="ValidationSummary1" runat="server" />                <br />                <asp:FileUpload ID="FileUpload1" runat="server" />                 <asp:Button ID="btn_upload" runat="server" OnClick="btn_upload_Click"                     Text="Upload" />                                  <asp:CustomValidator ID="CustomValidator1" runat="server"                     ControlToValidate="FileUpload1" Display="Static"                     ErrorMessage="You should only can upload image file such as files with .jpg or gif extension"                     OnServerValidate="Image_validate">*</asp:CustomValidator>            </td>        </tr>    </table>
本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/lovnov/archive/2009/08/31/4504280.aspx<table style="width: 100%">        <tr>            <td>                <asp:ValidationSummary ID="ValidationSummary1" runat="server" />                <br />                <asp:FileUpload ID="FileUpload1" runat="server" />                 <asp:Button ID="btn_upload" runat="server" OnClick="btn_upload_Click"                     Text="Upload" />                                  <asp:CustomValidator ID="CustomValidator1" runat="server"                     ControlToValidate="FileUpload1" Display="Static"                     ErrorMessage="You should only can upload image file such as files with .jpg or gif extension"                     OnServerValidate="Image_validate">*</asp:CustomValidator>            </td>        </tr>    </table>
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;   
using System.Drawing;   
  
  
public partial class practice_FileUpload : System.Web.UI.Page   
{   
    protected void Page_Load(object sender, EventArgs e)   
    {   
  
    }   
  
    protected void btn_upload_Click(object sender, EventArgs e)   
    {   
        if (Page.IsValid)   
        {   
            string path = @Page.MapPath("User_Edit.aspx").Replace("User_Edit.aspx", "") + "Documents\\";   
            string s = path + Session["UserName"].ToString();   
            if (!System.IO.Directory.Exists(path + Session["UserName"].ToString()))   
            {   
  
                System.IO.Directory.CreateDirectory(path + Session["UserName"].ToString());   
  
            }   
  
  
            if (FileUpload1.HasFile)   
            {   
  
  
                FileUpload1.SaveAs(Server.MapPath("~/Seeker/Documents/" + Session["UserName"].ToString() + "/" + this.FileUpload1.FileName));   
                 
  
            }   
        }   
    }   
  
  
    protected void Image_validate(object source, ServerValidateEventArgs args)   
    {   
  
        string fileExt = Path.GetExtension(FileUpload1.FileName).ToLower();   
        string fileName = Path.GetFileName(FileUpload1.FileName);   
         
  
        if (fileExt != ".jpg" && fileExt != ".gif")   
        {   
            args.IsValid = false;   
             
  
        }   
    }   
  
  
    protected void CustomValidator2_ServerValidate(object source, ServerValidateEventArgs args)   
    {   
        Bitmap bmIP = new Bitmap(FileUpload1.PostedFile.InputStream);   
  
        if (bmIP.Width > 100 | bmIP.Height > 100)   
        {   
  
            args.IsValid = false;   
  
        }   
  
        else  
        {   
  
            args.IsValid = true;   
  
        }   
    }   
}  

Answer 5

晕，系统粘多了下面这段是前台。
<table style="width: 100%">        <tr>            <td>                <asp:ValidationSummary ID="ValidationSummary1" runat="server" />                <br />                <asp:FileUpload ID="FileUpload1" runat="server" />                 <asp:Button ID="btn_upload" runat="server" OnClick="btn_upload_Click"                     Text="Upload" />                                  <asp:CustomValidator ID="CustomValidator1" runat="server"                     ControlToValidate="FileUpload1" Display="Static"                     ErrorMessage="You should only can upload image file such as files with .jpg or gif extension"                     OnServerValidate="Image_validate">*</asp:CustomValidator>            </td>        </tr>    </table>

Answer 6

关于上传文件的代码楼主去cnblogs上搜索一下很多的。不管是单文件还是多文件上传

Answer 7

代码里这段可以忽略，这是限制图片长和宽的protected void CustomValidator2_ServerValidate(object source, ServerValidateEventArgs args)   
    {   
        Bitmap bmIP = new Bitmap(FileUpload1.PostedFile.InputStream);   
  
        if (bmIP.Width > 100 | bmIP.Height > 100)   
        {   
  
            args.IsValid = false;   
  
        }   
  
        else  
        {   
  
            args.IsValid = true;   
  
        }   
    }