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Process.Start() in C# with examples

Process.Start() in C# with examples

Anonymous User 144977 28-Aug-2011

There are many times a situation has occurs (such as user want to see document file, see any webpage, run any external program, etc.) where a user wants to launch another .exe file or Application in C# programming, to resolve this problem, C# provides an efficient way through which we can do it. C# has namespace namely System. Diagnostics have a class named Process which plays an important role to launch another .exe or file.

Process class has a method ‘Start()’ through which we can launch another application in C# programming. Process class access local or remote process and enables them to the user for start or stop local system process that is we can say that process class helps to start, stopping, controlling and monitoring external application. Process component provides to access the process, which is running in the system. Using the Process component we can obtain the list of the running processes in the system and we can also start the new process in the system.   

Here I am giving a console application example to open directory with the help of

Process.Start() method. Let’s see a brief demonstration.

Example:
namespace ConsoleProcessTest
{
    class Program
    {
        static voidMain(string[] args)
        {
            // open the new process of opening directory
            Process.Start(@"c:\\");
 
        }
    }
}

 This example sends the C:\ directory name to the operating system, which will result in an explorer opening the folder on your system or desktop. 

Now, in the same manner, you can open the text files, word file and much more.

Example: Open .txt and .docx file

To open these files write the following code.

namespace ConsoleProcessTest
{
    class Program
    {
        static voidMain(string[] args)
        {
            // process one opening for ms-word file
            Process.Start(@"C:\Users\Sachindra\Desktop\TestFile.docx");
            // waiting for 1 second to create second process
            Thread.Sleep(1000);
            // process two opening for txt file
            Process.Start(@"C:\Users\Sachindra\Desktop\TestTextFile.txt");
           
         } 
  }
 }

Example: Open any webpage or Launch URL’S 

You can open any webpage through the Process.Start() method by entering the URL of the webpage within the Start() method as an argument

as well as you can also search any content or topic via the search engine such as Google, Yahoo, etc. Let’s see a brief example of it.

Search any content through google search engine write the following code:

using System.Diagnostics;
using System.Threading;
namespace ConsoleProcessTest
{
    class Program
    {
        static voidMain(string[] args)
        {
            // create method and pass content within it and search it in google 
            SearchContentOnGoogle("Trigger in sql server mindstick");
        }
        public staticvoidSearchContentOnGoogle(stringcontent)
        {
            //enter the search engine url 
            Process.Start("http://google.com/search?q="+content);
        }
    } 
  
}

Output:

Process.Start() in C# with examples

Now launch any web page URL such as:

using System.Diagnostics;
using System.Threading;
namespace ConsoleProcessTest
{
    class Program
    {
        static voidMain(string[] args)
        {
           // Launch any other url or web page
            Process.Start("http://mindstick.com");
        }
      
    } 
  
}

Output:

Process.Start() in C# with examples

Example: Launch Legacy Program or .exe file

You can launch or run any executable program through the process component. Here I am taking an old console application and run it with the help of the ProcessStartInfo class which has many properties.

namespace ConsoleProcessTest
{
    class Program
    {
        static voidMain(string[] args)
        {
           // Create object of ProcessStartInfo class
            ProcessStartInfo stinfo= new ProcessStartInfo();
            // Assign file name
            stinfo.FileName= @"C:\Users\Sachindra\Desktop\Logic.exe";
            // start the process without creating new window default is false
            stinfo.CreateNoWindow= true;
            // true to use the shell when starting the process; otherwise, the process is created directly from the executable file
            stinfo.UseShellExecute= true;
 
            // Creating Process class object to start process
            Process myProcess= Process.Start(stinfo);
            // start the process
            myProcess.Start();
 
        }
      
    } 
  
}

 Output:

Process.Start() in C# with examples

 Example: Start-Process as Administrator Permissions

To run any process as administrator rights writes the following code.

namespace ConsoleProcessTest
{
    class Program
    {
        static voidMain(string[] args)
        {
            try
            {
                // create process instance
                Process myprocess= newProcess();
                // set the file path which you want in process
                 myprocess.StartInfo.FileName= @"C:\Users\Sachindra\Desktop\Logic.exe";
                // take the administrator permision to run process
                myprocess.StartInfo.Verb="runas";
                // start process
                myprocess.Start();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
                Console.ReadKey();
            }
        }
      
    } 
}

c# c# 
Updated 26-May-2020
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