C# process class related sorting
1. Get the user name of the process based on the process name?
Need to add a reference to
Copy the codeThe code is as follows:
using ;
using ;
static void Main(string[] args)
{
foreach (Process p in ())
{
();
("----");
(GetProcessUserName());
}
();
}
private static string GetProcessUserName(int pID)
{
string text1 = null;
SelectQuery query1 = new SelectQuery("Select * from Win32_Process WHERE processID=" + pID);
ManagementObjectSearcher searcher1 = new ManagementObjectSearcher(query1);
try
{
foreach (ManagementObject disk in ())
{
ManagementBaseObject inPar = null;
ManagementBaseObject outPar = null;
inPar = ("GetOwner");
outPar = ("GetOwner", inPar, null);
text1 = outPar["User"].ToString();
break;
}
}
catch
{
text1 = "SYSTEM";
}
return text1;
}
Process name Yes
2. Obtaining process
using ;
Note: Namespaces provide specific classes that enable you to interact with system processes, event logs, and performance counters.
Copy the codeThe code is as follows:
string str = "";
Process[] processes;
//Get the list of current active processes.
processes = ();
//Grab some basic information for each process.
Process process;
for(int i = 0;i<-1;i++)
{
process = processes[i];
str = str + () + " : " +
+ "\r\n";
}
(str);
= processes[0].();
//Show process related information
string s = "";
System.Int32 processid;
Process process;
processid = ();
process = (processid);
s = s + "The overall priority category of the process:" + () + " \r\n";
s = s + "Number of handles opened by the process:" + + "\r\n";
s = s + "The main window title of the process:" + + "\r\n";
s = s + " The minimum working set size allowed by this process:" + () + " \r\n";
s = s + "The maximum working set size allowed by this process:" + () + " \r\n";
s = s + "The paging memory size of the process:" + + "\r\n";
s = s + "The peak pagination memory size of the process:" + + "\r\n";
(s);
}
catch
{
("Illegal process ID!");
}
[Note] The Int32 value type represents a signed integer with a value between -2,147,483,648 and +2,147,483,647.
Int32 provides methods to compare an instance of the type, convert the value of the instance to its String representation, and convert the String representation of the number to an instance of the type.
For information about how format specification code controls the String representation of value types, see Format Setting Overview.
This type implements interfaces IComparable, IFormattable, and IConvertible. Use the Convert class for conversion instead of using this type of IConvertible explicit interface member implementation.
It is worth mentioning that the Process class has many member variables that can obtain almost every detail of the process. In the example above, a few members were simply selected to demonstrate. If you need it during development, you can refer to the MSDN Library to query Process class members for more detailed information. This will not be listed here.
3. Terminate the process
Copy the codeThe code is as follows:
private void button2_Click(object sender, EventArgs e)
{
if ( > 0)
{
try
{
string proName = [0].Text;
Process[] p = (proName);
p[0].Kill();
("Process shutdown successfully!");
GetProcess();
}
catch
{
("This process cannot be closed!");
}
}
else
{
("Please select the process to terminate!");
}
}
4. In C#, use the process class to call external programs and execute dos commands
Copy the codeThe code is as follows:
private string RunCmd(string command)
{
//Instance a Process class, start a process
Process p = new Process();
//The Process class has a StartInfo property
//Set the program name
= "";
//Set the program execution parameters
= "/c " + command;
//Close the use of Shell
= false;
//Redirect standard input
= true;
= true;
//Redirect error output
= true;
//Set not to display the window
= true;
//start up
();
//You can also enter the command to be executed in this way
//But remember to add Exit, otherwise the next program will be crashed when executing
//(command);
//("exit");
//Get command execution results from the output stream
return ();
}