调试易

using System;
using System.Data;
using System.Configuration;
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;/// <summary>
/// MyUpload 的摘要说明
/// </summary>
public class MyUpload
{
    private System.Web.HttpPostedFile postedFile = null;
    private string savePath = "";
    private string[] extension;
    private int fileLength = 0;
    public string[] filestype ={ "txt", "doc", "gif" };
 public MyUpload()
 {
  //
  // TODO: 在此处添加构造函数逻辑
  //
 }
    public string Help
    {
        get
        {
            string helpstring;
            helpstring = "<font size=3>MyUpload myUpload=new MyUpload(); //构造函数";
            helpstring += "myUpload.PostedFile=file1.PostedFile;//设置要上传的文件";
            helpstring += "myUpload.SavePath=\"e:\\\";//设置要上传到服务器的路径，默认c:\\";
            helpstring += "myUpload.FileLength=100; //设置上传文件的最大长度，单位k，默认1k";
            helpstring += "myUpload.Extension=\"doc\";设置上传文件的扩展名，默认txt";
            helpstring += "label1.Text=myUpload.Upload();//开始上传，并显示上传结果";
            helpstring += "<font size=3 color=red>";
            return helpstring;
        }    }    public System.Web.HttpPostedFile PostedFile
    {
        get
        {
            return postedFile;
        }
        set
        {
            postedFile = value;
        }
    }    public string SavePath
    {
        get
        {
            if (savePath != "") return savePath;
            return "c:\\";
        }
        set
        {
            savePath = HttpContext.Current.Server.MapPath("../upimages/") + value;/////////////////////注意这里选取上传文件路径,可以修改成传递参数类型的
        }
    }    public int FileLength
    {
        get
        {
            if (fileLength != 0) return fileLength;
            return 1024;
        }
        set
        {
            fileLength = value * 1024;
        }
    }    public string[] Extension
    {
        get
        {
            if (extension != null) return extension;
            return filestype;
        }
        set
        {
            extension = value;
        }
    }    public string PathToName(string path)
    {
        int pos = path.LastIndexOf("\\");
        return path.Substring(pos + 1);
    }    public string Upload()
    {
        int biaoshi = 0;
        if (PostedFile.FileName != "")
        {
            try
            {
                string fileName = PathToName(PostedFile.FileName);
                for (int i = 0; i < Extension.Length; i++)
                {
                    if (fileName.EndsWith(Extension[i]))
                    {
                        biaoshi = 1;
                    }
                }
                if (biaoshi != 1)
                {
                    string errs = "";
                    for (int i = 0; i < Extension.Length; i++)
                    {
                        errs = errs + Extension[i] + "/";
                    }
                    return "您必须选择" + errs + "类型的文件!";
                }
                if (PostedFile.ContentLength > FileLength) return "文件太大，超过了限定值!";
                PostedFile.SaveAs(SavePath + DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString() + fileName.Substring(fileName.Length - 4, 4));
                return DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString() + fileName.Substring(fileName.Length - 4, 4);
            }
            catch (System.Exception exc) { return exc.Message; }
        }
        return "请选择文件后再进行上传!";
    } 
}////////////////////使用例子,直接复制没有修改/////////////////////
        string[] filestype ={ "gif", "jpg", "png" };
        MyUpload myload = new MyUpload();
        myload.PostedFile = File1.PostedFile;
        myload.SavePath = "";
        myload.FileLength = 1000;
        myload.Extension = filestype;
        Label1.Text = myload.Upload();
        if (Label1.Text.StartsWith("200"))
        {
            Label2.Text = "upimages/" + Label1.Text;            Label1.Text = "上传更新成功!";
        }