C# FileStream Unlock
Description
FileStream Unlock Allows access by other processes to
all or part of a file that was previously locked.
Syntax
FileStream.Unlock has the following syntax.
public virtual void Unlock(
long position,
long length
)
Parameters
FileStream.Unlock has the following parameters.
position- The beginning of the range to unlock.length- The range to be unlocked.
Returns
FileStream.Unlock method returns
Example
/*from ww w. j a va 2 s.c o m*/
using System;
using System.IO;
using System.Text;
class FStreamLock
{
static void Main()
{
UnicodeEncoding uniEncoding = new UnicodeEncoding();
string myData = "from java2s.com ";
int textLength = uniEncoding.GetByteCount(myData);
int recordNumber = 13;
int byteCount = uniEncoding.GetByteCount(recordNumber.ToString());
using(FileStream fileStream = new FileStream("Test.dat", FileMode.OpenOrCreate,
FileAccess.ReadWrite, FileShare.ReadWrite)){
fileStream.Lock(textLength - 1, byteCount);
Console.WriteLine("The specified part " +
"of file has been locked.");
fileStream.Unlock(
textLength - 1, byteCount);
Console.WriteLine("The specified part " +
"of file has been unlocked.");
}
}
}
The code above generates the following result.
