File Read and save class

 

Using System;
Using System. IO;
Using System. Collections. Generic;
Using System. Linq;
Using System. Text;

Namespace CommHelper
{
Public class FilesAccess
{
Public FilesAccess ()
{}
 
# Region
/// <Summary>
/// Write the file content to the physical location
/// </Summary>
/// <Param name = "as_filename"> </param>
/// <Param name = "a_FileData"> </param>
/// <Returns> </returns>
Public static string WriteFile (string as_filename, byte [] a_FileData)
{
String sRet = "";
If (as_filename = "")
{
SRet = "specify the path and file name ";
Return sRet;
}
Try
{
System. IO. FileStream objFile = new System. IO. FileStream (as_filename,
System. IO. FileMode. OpenOrCreate, System. IO. FileAccess. ReadWrite, System. IO. FileShare. ReadWrite );
System. IO. BinaryWriter objSW = new BinaryWriter (objFile, System. Text. Encoding. Unicode );
ObjSW. BaseStream. Write (a_FileData, 0, a_FileData.Length );
ObjSW. Close ();
ObjSW = null;
ObjFile. Close ();
ObjFile = null;
}
Catch (Exception ex)
{
SRet = ex. Message;
}
Return sRet;
}
/// <Summary>
/// Write the file content to the physical location
/// </Summary>
/// <Param name = "as_filename"> </param>
/// <Param name = "as_FileData"> </param>
/// <Returns> </returns>
Public static string WriteFile (string as_filename, string as_FileData)
{
String sRet = "";
If (as_filename = "")
{
SRet = "specify the path and file name ";
Return sRet;
}
Try
{
System. IO. FileStream objFile = new System. IO. FileStream (as_filename,
System. IO. FileMode. OpenOrCreate, System. IO. FileAccess. ReadWrite, System. IO. FileShare. ReadWrite );
System. IO. BinaryWriter objSW = new BinaryWriter (objFile, System. Text. Encoding. Unicode );
Byte [] tmpData = System. Text. Encoding. Unicode. GetBytes (as_FileData );
ObjSW. BaseStream. Write (tmpData, 0, tmpData. Length );
ObjSW. Close ();
ObjSW = null;
ObjFile. Close ();
ObjFile = null;
SRet = "";
}
Catch (Exception exp)
{
SRet = exp. Message;
}
Return sRet;
}
/// <Summary>
/// Read the file content in the physical location
/// </Summary>
/// <Param name = "as_filename"> </param>
/// <Returns> </returns>
Public static byte [] ReadFile (string as_filename)
{
Byte [] tmpData = null;
If (as_filename = "")
{
Return tmpData;
}
Byte [] tmpAddData = new byte [1024*1024];
Int intNum = 0;
Int intReadLen = 0;
Long lngLen = 0;
System. IO. FileStream objFile = new System. IO. FileStream (as_filename,
System. IO. FileMode. Open, System. IO. FileAccess. Read, System. IO. FileShare. Read );
System. IO. BinaryReader objSR = new System. IO. BinaryReader (objFile, System. Text. Encoding. Unicode );
TmpData = new byte [objSR. BaseStream. Length];
While (true)
{
IntReadLen = objSR. Read (tmpAddData, 0, tmpAddData. Length );
Array. Copy (tmpAddData, 0, tmpData, lngLen, intReadLen );
LngLen = lngLen + intReadLen;
IntNum = intNum + 1;
If (intReadLen <= 0)
{
Break;
}
}
ObjSR. Close ();
ObjSR = null;
ObjFile. Close ();
ObjFile = null;
Return tmpData;
}
/// <Summary>
/// Read the content of the file in the physical location
/// </Summary>
/// <Param name = "as_filename"> </param>
/// <Param name = "as_FileData"> </param>
/// <Returns> </returns>
Public static string ReadFile (string as_filename, out byte [] as_FileData)
{
String sRet = "";
As_FileData = null;
Byte [] tmpData = null;
If (as_filename = "")
{
SRet = "specify the path and file name ";
Return sRet;
}
Try
{
Byte [] tmpAddData = new byte [1024*1024];
Int intNum = 0;
Int intReadLen = 0;
Long lngLen = 0;
System. IO. FileStream objFile = new System. IO. FileStream (as_filename,
System. IO. FileMode. Open, System. IO. FileAccess. Read, System. IO. FileShare. Read );
System. IO. BinaryReader objSR = new System. IO. BinaryReader (objFile, System. Text. Encoding. Unicode );
TmpData = new byte [objSR. BaseStream. Length];
While (true)
{
IntReadLen = objSR. Read (tmpAddData, 0, tmpAddData. Length );
Array. Copy (tmpAddData, 0, tmpData, lngLen, intReadLen );
LngLen = lngLen + intReadLen;
IntNum = intNum + 1;
If (intReadLen <= 0)
{
Break;
}
}
ObjSR. Close ();
ObjSR = null;
ObjFile. Close ();
ObjFile = null;
As_FileData = tmpData;
}
Catch (Exception ex)
{
SRet = ex. Message. ToString ();
As_FileData = null;
}
Return sRet;
}

/// <Summary>
/// Read the file content from the physical location
/// </Summary>
/// <Param name = "as_filename"> </param>
/// <Param name = "asFileData"> </param>
/// <Returns> </returns>
Public static string ReadFile (string as_filename, out string as_FileData)
{
String sRet = "";
As_FileData = "";
Try
{
If (as_filename = "")
{
SRet = "specify the path and file name ";
Return sRet;
}
Byte [] tmpData;
Byte [] tmpAddData = new byte [1024*1024];
Int intNum = 0;
Int intReadLen = 0;
Long lngLen = 0;
System. IO. FileStream objFile = new System. IO. FileStream (as_filename,
System. IO. FileMode. Open, System. IO. FileAccess. Read, System. IO. FileShare. Read );
System. IO. BinaryReader objSR = new System. IO. BinaryReader (objFile, System. Text. Encoding. Unicode );
TmpData = new byte [objSR. BaseStream. Length];
While (true)
{
IntReadLen = objSR. Read (tmpAddData, 0, tmpAddData. Length );
Array. Copy (tmpAddData, 0, tmpData, lngLen, intReadLen );
LngLen = lngLen + intReadLen;
IntNum = intNum + 1;
If (intReadLen <= 0)
{
Break;
}
}
As_FileData = System. Text. Encoding. Unicode. GetString (tmpData );
ObjSR. Close ();
ObjSR = null;
ObjFile. Close ();
ObjFile = null;
SRet = "";
}
Catch (Exception eRead)
{
SRet = eRead. Message. ToString ();
As_FileData = "";
}
Return sRet;
}
/// <Summary>
/// Write the file content to the physical location
/// </Summary>
/// <Param name = "as_filename"> </param>
/// <Param name = "as_FileData"> </param>
/// <Returns> </returns>
Public static string WriteFile_UTF8 (string as_filename, string as_FileData)
{
String sRet = "";
Try
{
If (as_filename = "")
{
SRet = "specify the path and file name ";
Return sRet;
}
System. IO. FileStream objFile = new System. IO. FileStream (as_filename,
System. IO. FileMode. OpenOrCreate, System. IO. FileAccess. ReadWrite, System. IO. FileShare. ReadWrite );
System. IO. BinaryWriter objSW = new BinaryWriter (objFile, System. Text. Encoding. UTF8 );
Byte [] tmpData = System. Text. Encoding. UTF8.GetBytes (as_FileData );
ObjSW. BaseStream. Write (tmpData, 0, tmpData. Length );
ObjSW. Close ();
ObjSW = null;
ObjFile. Close ();
ObjFile = null;
SRet = "";
}
Catch (Exception exp)
{
SRet = exp. Message;
}
Return sRet;
}

# Endregion
}
}