how i can copy file to byte array

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how i can copy file by stream file to byte array
and copy byte array to stream file and save this file
thanks for any help

Posted 4-Feb-11 0:00am

Mostafa Elsadany

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#realJSOP · Answer 1 · 2011-02-04T01:08:00

Load your text file into a single string, and then call this method:

C#

//--------------------------------------------------------------------------------
public static byte[] StringToByteArray(string text)
{
    UTF8Encoding encoding = new UTF8Encoding();
    return encoding.GetBytes(text);
}

To put it back into a string, call this method:

C#

//--------------------------------------------------------------------------------
public static string ByteArrayToString(byte[] array)
{
    UTF8Encoding encoding = new UTF8Encoding();
    string text  = encoding.GetString(array);
    return text;
}

shakil0304003 · Answer 2 · 2011-02-04T00:11:00

Solution 1

public bool writeByteArrayToFile(byte[] buff, string fileName)
{
bool response = false;

try
{
FileStream fs = new FileStream(fileName, FileMode.Create, FileAccess.ReadWrite);
BinaryWriter bw = new BinaryWriter(fs);
bw.Write(buff);
bw.Close(); //Thanks Karlo for pointing out!
response = true;
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}

return response;
}

For save file, see this link
Click

Posted 4-Feb-11 0:11am

shakil0304003

Comments

Mostafa Elsadany 5-Feb-11 3:04am

byte[] s=new byte [10050];
SaveFileDialog sv = new SaveFileDialog();
OpenFileDialog op = new OpenFileDialog();
string opfile, svfile;
if (op.ShowDialog() == DialogResult.OK && sv.ShowDialog() == DialogResult.OK)
{
opfile = op.FileName;
svfile = sv.FileName + Path .GetExtension (opfile);
MessageBox.Show(svfile );
bool x= writeByteArrayToFile(s, opfile );
File.WriteAllBytes(svfile, s);
MessageBox .Show (x.ToString ());
}
i try but when copy this byte array to any file give me error in file