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Process.Start() in C# with examples


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Process.Start() in C# with examples

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 user want 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 which have a class named Process whichplays 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 to user for start or stop local system process that is we can say that process class helps to starting, 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 running process in the system and we can also start the new process in the system.

   

Here I am giving an console application example to open directory with help of Process.Start() method. Let’s see the 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 explorer opening the folder on your system or desktop.

 

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

Example: Open .txt and .docx file

To open these file write 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 URL of webpage within the Start() method as argument as well as you can also search any content or topic via the search engine such as google, yahoo etc. Let’s see brief example on 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 help of ProcessStartInfo class which have 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 Permision

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();

            }

        }

      

    } 

}


DLL path hide

By parag patel on   4 years ago
 public float KIEMA()
    {
 try
            {

   
            string lgin = "";
            float f = AFFile.FOpen(@"d:\\localhost.dll", "r");
            if (ATFloat.IsTrue(f))
            {
                while (ATFloat.IsFalse(AFFile.FEof(f)))
                {
                    lgin = lgin + AFFile.FGets(f);
          
                }
            }
            else
            {
                AFStr.printf("ERROR: file can not be found (does not exist)");
            }
            AFFile.FClose(f);

            if (lgin.Trim() == ":)")
            {
                     string t2 = "KIEMA()";

how can hide
i creat dll then open in notpad [  YException Exception Show .cctor    #d : \ \ l o c a l h o s t . d l l  r  ]
how can hide this pls help   k_info108@yahoo.com

Re: DLL Path Hide

By Arun Singh on   4 years ago
Hi Parag Patel,
There are lots of technique to hide the dll path, in one of them is Encryption and Decryption technique through which you can encode  your DLL path  and use it.

Hi Arun

By David Zeindler on   2 years ago
Do you know how you could start an Application from a Service on Windows Server 2008/12 (C#)

I HAVE BEEN SEARCHING EVERYWHERE, COUN'T FIND A VIABLE SOLUTION BUT YOURS WORKS PERFECTLY, THANK YOU

By Golden Rasha on   3 months ago
BUT 1 MORE THING, WHEN I EXECUTE MY EXTERNAL EXE PROGRAM, IT OPENS UP NORMALLY AS IF I WENT TO ITS FOLDER AND DOUBLE CLICKED IT, HOW CAN I MAKE IT SO THAT THE EXE PROGRAM OPENS UP INSIDE MY WINFORM APPLICATION?

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