Problem with byte array with more size

If it's a web service which you've written yourself, then this article may help you to upload a very large file in chunks:

http://www.codeproject.com/KB/webservices/WebserviceFileUpload.aspx

There is no way to do it other than to read the file content in smaller blocks, one block at a time. There are not enough resources on your computer to do so.

In addition 32-bit process cannot use more than 2GB of RAM (4GB with specific settings on 64-bit Windows). You can check it on this address:
http://msdn.microsoft.com/en-us/library/aa366778%28v=vs.85%29.aspx

Zoran

System.IO.FileStream stream = new System.IO.FileStream(fileInfo.FullName, System.IO.FileMode.Open, System.IO.FileAccess.Read)

BinaryReader br = new BinaryReader(stream);
long numBytes = fileInfo.Length;//here fileinfo.length value is 1073741823
data = br.ReadBytes((int)numBytes);

I am again getting the same exception error in the above line.
How to solve this problem..how can this work till 2 gb size(2147483647 bytes)

Please help..

the above code is working till 400 mb...

is there any other solution bcoz i can't change the much code now..the application is already running..i just want to allow maximum 2 gb size.

Try this:
try
{
    long size = 1;
    for (; ; )
    {
        byte[] buffer = new byte[size];
        Console.WriteLine("Allocated {0} bytes", size);
        size *= 2;
    }
}
catch (System.Exception ex)
{
    Console.WriteLine(ex.Message);
}

It will always fail with out of memory exception. You can't and you shouldn't allocate buffers that are more than, say a megabyte in length. It is a design flaw if you try to do such thing instead of searching for a better solution.

Zoran

Buffer is allocated as byte[] and you can use it in successive calls to Web service in the loop.

You can't have single buffer containing all data from such a large file because your computer and OS do not support such large buffers.

There is off course a solution, and that is to open socke connection to Web service and to mimic SOAP protocol yourself, so that you write contents of the file iteratively into the socket. But that would be extremely complex solution for the problem.

Zoran

You can't allocate such a large block in memory because of memory size limitations and maximum memory assigned to a process limitations.

Whenever working with files, you should operate in smaller steps, so that you can control amount of memory used at any time. Otherwise, your application might crash simply because user has tried to execute it on a big file.

Here is the code which iterates through file in smaller steps. You can control size of the buffer used.

byte[] buffer = new byte[100000];
using (FileStream fs = new FileStream("tmp.txt", FileMode.Open))
{
    int bytesRead = 0;
    do
    {
        bytesRead = fs.Read(buffer, 0, buffer.Length);
        // Do something with the data
    }
    while (bytesRead > 0);
}

Zoran