using System;
using System.IO;
using System.Web;
using System.Web.UI.WebControls;
namespace DotNet.Utilities
{
/// <summary>
/// 文件上传类
/// </summary>
public class FileUp
{
public FileUp()
{ }
/// <summary>
/// 转换为字节数组
/// </summary>
/// <param name="filename">文件名</param>
/// <returns>字节数组</returns>
public byte[] GetBinaryFile(string filename)
{
if (File.Exists(filename))
{
FileStream Fsm = null;
try
{
Fsm = File.OpenRead(filename);
return this.ConvertStreamToByteBuffer(Fsm);
}
catch
{
return new byte[0];
}
finally
{
Fsm.Close();
}
}
else
{
return new byte[0];
}
}
/// <summary>
/// 流转化为字节数组
/// </summary>
/// <param name="theStream">流</param>
/// <returns>字节数组</returns>
public byte[] ConvertStreamToByteBuffer(System.IO.Stream theStream)
{
int bi;
MemoryStream tempStream = new System.IO.MemoryStream();
try
{
while ((bi = theStream.ReadByte()) != -1)
{
tempStream.WriteByte(((byte)bi));
}
return tempStream.ToArray();
}
catch
{
return new byte[0];
}
finally
{
tempStream.Close();
}
}
/// <summary>
/// 上传文件
/// </summary>
/// <param name="PosPhotoUpload">控件</param>
/// <param name="saveFileName">保存的文件名</param>
/// <param name="imagePath">保存的文件路径</param>
public string FileSc(FileUpload PosPhotoUpload, string saveFileName, string imagePath)
{
string state = "";
if (PosPhotoUpload.HasFile)
{
if (PosPhotoUpload.PostedFile.ContentLength / 1024 < 10240)
{
string MimeType = PosPhotoUpload.PostedFile.ContentType;
if (String.Equals(MimeType, "image/gif") || String.Equals(MimeType, "image/pjpeg"))
{
string extFileString = System.IO.Path.GetExtension(PosPhotoUpload.PostedFile.FileName);
PosPhotoUpload.PostedFile.SaveAs(HttpContext.Current.Server.MapPath(imagePath));
}
else
{
state = "上传文件类型不正确";
}
}
else
{
state = "上传文件不能大于10M";
}
}
else
{
state = "没有上传文件";
}
return state;
}
/// <summary>
/// 上传文件
/// </summary>
/// <param name="binData">字节数组</param>
/// <param name="fileName">文件名</param>
/// <param name="fileType">文件类型</param>
//-------------------调用----------------------
//byte[] by = GetBinaryFile("E:\\Hello.txt");
//this.SaveFile(by,"Hello",".txt");
//---------------------------------------------
public void SaveFile(byte[] binData, string fileName, string fileType)
{
FileStream fileStream = null;
MemoryStream m = new MemoryStream(binData);
try
{
string savePath = HttpContext.Current.Server.MapPath("~/File/");
if (!Directory.Exists(savePath))
{
Directory.CreateDirectory(savePath);
}
string File = savePath + fileName + fileType;
fileStream = new FileStream(File, FileMode.Create);
m.WriteTo(fileStream);
}
finally
{
m.Close();
fileStream.Close();
}
}
}
}Das obige ist der detaillierte Inhalt vonC#-Datei-Upload-Klasse, Datei-Stream, Byte-Array usw. verstehen.. Für weitere Informationen folgen Sie bitte anderen verwandten Artikeln auf der PHP chinesischen Website!
