CodeToday: Upload File

using System.IO;

 

public static string UploadFile(string newFileName, string directory, FileUpload fileUpload, bool overwrite)
{
    if (fileUpload.PostedFile.FileName != "")
    {            
        string oldFileName = fileUpload.FileName;
        DirectoryInfo dirTempInfo = new DirectoryInfo(HttpContext.Current.Request.PhysicalApplicationPath + "Temp");
        if (!dirTempInfo.Exists) dirTempInfo.Create();
        string tempPath = dirTempInfo.FullName + @"\" + oldFileName;

        fileUpload.SaveAs(tempPath);

        FileInfo tempInfo = new FileInfo(tempPath);
        string extension = tempInfo.Extension;

        if (newFileName == "") newFileName = tempInfo.Name.Substring(0, tempInfo.Name.IndexOf(extension));
        string newFullName = newFileName + extension;
        DirectoryInfo dirInfo = new DirectoryInfo(HttpContext.Current.Request.PhysicalApplicationPath + directory);
        if (!dirInfo.Exists) dirInfo.Create();
        string filePath = dirInfo.FullName + @"\" + newFullName;
        FileInfo fileInfo = new FileInfo(filePath);
        if (!fileInfo.Exists || overwrite)
        {
            if (fileInfo.Exists) fileInfo.Delete();
            tempInfo.MoveTo(filePath);
        }
        else tempInfo.Delete();

        return dirInfo.FullName + "/" + newFullName;
    }
    return "";
} 

กำหนดขนาดไฟล์สูงสุดที่ upload หน่วยเป็น KB ได้ที่ web.config

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Imagination is more Important than Knowledge... /A.Einstein