C# 文件上传帮助类

来源：互联网发布：老虎机算法作弊器编辑：程序博客网时间：2024/04/17 04:05
using System;using System.IO;namespace DotNet.Utilities{    /// <summary>    /// UpLoadFiles 的摘要说明    /// </summary>    public class UpLoadFiles : System.Web.UI.Page    {        public UpLoadFiles()        {            //            // TODO: 在此处添加构造函数逻辑            //        }        public string UploadFile(string filePath, int maxSize, string[] fileType, System.Web.UI.HtmlControls.HtmlInputFile TargetFile)        {            string Result = "UnDefine";            bool typeFlag = false;            string FilePath = filePath;            int MaxSize = maxSize;            string strFileName, strNewName, strFilePath;            if (TargetFile.PostedFile.FileName == "")            {                return "FILE_ERR";            }            strFileName = TargetFile.PostedFile.FileName;            TargetFile.Accept = "*/*";            strFilePath = FilePath;            if (Directory.Exists(strFilePath) == false)            {                Directory.CreateDirectory(strFilePath);            }            FileInfo myInfo = new FileInfo(strFileName);            string strOldName = myInfo.Name;            strNewName = strOldName.Substring(strOldName.LastIndexOf("."));            strNewName = strNewName.ToLower();            if (TargetFile.PostedFile.ContentLength <= MaxSize)            {                for (int i = 0; i <= fileType.GetUpperBound(0); i++)                {                    if (strNewName.ToLower() == fileType[i].ToString()) { typeFlag = true; break; }                }                if (typeFlag)                {                    string strFileNameTemp = GetUploadFileName();                    string strFilePathTemp = strFilePath;                    float strFileSize = TargetFile.PostedFile.ContentLength;                    strOldName = strFileNameTemp + strNewName;                    strFilePath = strFilePath + "\\" + strOldName;                    TargetFile.PostedFile.SaveAs(strFilePath);                    Result = strOldName + "|" + strFileSize;                    TargetFile.Dispose();                }                else                {                    return "TYPE_ERR";                }            }            else            {                return "SIZE_ERR";            }            return (Result);        }        /// <summary>        /// 上传文件        /// </summary>        /// <param name="filePath">保存文件地址</param>        /// <param name="maxSize">文件最大大小</param>        /// <param name="fileType">文件后缀类型</param>        /// <param name="TargetFile">控件名</param>        /// <param name="saveFileName">保存后的文件名和地址</param>        /// <param name="fileSize">文件大小</param>        /// <returns></returns>        public string UploadFile(string filePath, int maxSize, string[] fileType, System.Web.UI.HtmlControls.HtmlInputFile TargetFile, out string saveFileName, out int fileSize)        {            saveFileName = "";            fileSize = 0;            string Result = "";            bool typeFlag = false;            string FilePath = filePath;            int MaxSize = maxSize;            string strFileName, strNewName, strFilePath;            if (TargetFile.PostedFile.FileName == "")            {                return "请选择上传的文件";            }            strFileName = TargetFile.PostedFile.FileName;            TargetFile.Accept = "*/*";            strFilePath = FilePath;            if (Directory.Exists(strFilePath) == false)            {                Directory.CreateDirectory(strFilePath);            }            FileInfo myInfo = new FileInfo(strFileName);            string strOldName = myInfo.Name;            strNewName = strOldName.Substring(strOldName.LastIndexOf("."));            strNewName = strNewName.ToLower();            if (TargetFile.PostedFile.ContentLength <= MaxSize)            {                string strFileNameTemp = GetUploadFileName();                string strFilePathTemp = strFilePath;                strOldName = strFileNameTemp + strNewName;                strFilePath = strFilePath + "\\" + strOldName;                fileSize = TargetFile.PostedFile.ContentLength / 1024;                saveFileName = strFilePath.Substring(strFilePath.IndexOf("FileUpload\\"));                TargetFile.PostedFile.SaveAs(strFilePath);                TargetFile.Dispose();            }            else            {                return "上传文件超出指定的大小";            }            return (Result);        }        public string UploadFile(string filePath, int maxSize, string[] fileType, string filename, System.Web.UI.HtmlControls.HtmlInputFile TargetFile)        {            string Result = "UnDefine";            bool typeFlag = false;            string FilePath = filePath;            int MaxSize = maxSize;            string strFileName, strNewName, strFilePath;            if (TargetFile.PostedFile.FileName == "")            {                return "FILE_ERR";            }            strFileName = TargetFile.PostedFile.FileName;            TargetFile.Accept = "*/*";            strFilePath = FilePath;            if (Directory.Exists(strFilePath) == false)            {                Directory.CreateDirectory(strFilePath);            }            FileInfo myInfo = new FileInfo(strFileName);            string strOldName = myInfo.Name;            strNewName = strOldName.Substring(strOldName.Length - 3, 3);            strNewName = strNewName.ToLower();            if (TargetFile.PostedFile.ContentLength <= MaxSize)            {                for (int i = 0; i <= fileType.GetUpperBound(0); i++)                {                    if (strNewName.ToLower() == fileType[i].ToString()) { typeFlag = true; break; }                }                if (typeFlag)                {                    string strFileNameTemp = filename;                    string strFilePathTemp = strFilePath;                    strOldName = strFileNameTemp + "." + strNewName;                    strFilePath = strFilePath + "\\" + strOldName;                    TargetFile.PostedFile.SaveAs(strFilePath);                    Result = strOldName;                    TargetFile.Dispose();                }                else                {                    return "TYPE_ERR";                }            }            else            {                return "SIZE_ERR";            }            return (Result);        }        public string GetUploadFileName()        {            string Result = "";            DateTime time = DateTime.Now;            Result += time.Year.ToString() + FormatNum(time.Month.ToString(), 2) + FormatNum(time.Day.ToString(), 2) + FormatNum(time.Hour.ToString(), 2) + FormatNum(time.Minute.ToString(), 2) + FormatNum(time.Second.ToString(), 2) + FormatNum(time.Millisecond.ToString(), 3);            return (Result);        }        public string FormatNum(string Num, int Bit)        {            int L;            L = Num.Length;            for (int i = L; i < Bit; i++)            {                Num = "0" + Num;            }            return (Num);        }    }}
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