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 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 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
void Main(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
void Main(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
void Main(string[] args)
{
// create method and pass content within it and
search it in google
SearchContentOnGoogle("Trigger
in sql server mindstick");
}
public
static void
SearchContentOnGoogle(string content)
{
//enter the search engine url
Process.Start("http://google.com/search?q="+content);
}
}
}
Output:
Now launch any web page URL such as:
using
System.Diagnostics;
using
System.Threading;
namespace
ConsoleProcessTest
{
class
Program
{
static
void Main(string[] args)
{
// Launch any other url or web page
Process.Start("http://mindstick.com");
}
}
}
Output:
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
void Main(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:
Example: Start Process as Administrator Permision
To run any process as administrator rights writes the following code.
namespace
ConsoleProcessTest
{
class
Program
{
static
void Main(string[] args)
{
try
{
// create process
instance
Process
myprocess =
new Process();
// 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();
}
}
}
}
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