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Articles Home » C# » C# Program to Demonstrate Monitor Lock with Lock Statement

C# Program to Demonstrate Monitor Lock with Lock Statement

This C# Program Illustrates the Use of Monitor Lock with Lock Statement. Here A monitor is a mechanism for ensuring that only one thread at a time may be running a certain piece of code . A monitor has a lock, and only one thread at a time may acquire it.

Here is source code of the C# Program to Illustrate the Use of Monitor Lock with Lock Statement. The C# program is successfully compiled and executed with Microsoft Visual Studio. The program output is also shown below.

```
/*
```

 * C# Program to Illustrate the Use of Monitor Lock with Lock Statement

```
 */
```
```
using System;
```
```
using System.IO;
```
```
using System.Threading;
```
```
namespace monitorclass
```
```
{
```
```
    class Program
```
```
    {
```

        static object locker = new object();

```
        static void ThreadMain()
```
```
        {
```

            Thread.Sleep(800);    // Simulate Some work

```
            WriteToFile();          
```
```
        }
```
```
        static void WriteToFile()
```
```
        {
```

            String ThreadName = Thread.CurrentThread.Name;

            Console.WriteLine("{0} USING LOCKS", ThreadName);

```
            Monitor.Enter(locker);
```
```
            try
```
```
            {
```

                using (StreamWriter sw=new StreamWriter(@"D:\srip\sri.txt", true))

```
                {
```

                    sw.WriteLine(ThreadName);

```
                }
```
```
            }
```
```
            catch (Exception ex)
```
```
            {
```

                Console.WriteLine(ex.Message);

```
            }
```
```
            finally
```
```
            {
```
```
                Monitor.Exit(locker);
```

                Console.WriteLine("{0} Releasing LOCKS", ThreadName);

```
            }
```
```
        }
```
```
        static void Main(string[] args)
```
```
        {
```
```
            for (int i = 0; i < 3; i++)
```
```
            {
```

                Thread thread = new Thread(new ThreadStart(ThreadMain));

                thread.Name = String.Concat("Thread - ", i);

```
                thread.Start();
```
```
 
```
```
            }
```
```
            Console.Read();
```
```
        }
```
```
    }
```
```
}
```

Here is the output of the C# Program:

Thread 1 - USING LOCKS
Thread 1 - releasing LOCKS
Thread 0 - USING LOCKS
Thread 0 - releasing LOCKS
Thread 2 - USING LOCKS
Thread 2 - Releasing LOCKS

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C# Program to Demonstrate Monitor Lock with Lock Statement

C# Program to Demonstrate Monitor Lock with Lock Statement

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