using System.Diagnostics;

// Creates an array of all running processes
Process[] runningProcesses = Process.GetProcesses();

// Creates an array of all instances of one specific process
Process[] wordInstances = Process.GetProcessesByName("winword");

// If you know the specific ID, you can use the following to get the process
// but this isn't good for simply checking if the process is running
// because it crashes if the process is NOT running.
Process myProcess = Process.GetProcessById( ... );

from a solution provided by Çetin Basöz in Message #1221521

    string colString;
    string[] strItems;
    DataRow dr;
    TextReader tr;
    try
    {
        string filePath = @"c"\MyFile.txt";
        tr = File.OpenText(filePath);

        colString = tr.ReadLine();
        while(colString != null)
        {
             strItems = colString.Split(",".ToCharArray());

             dr = MyTable.NewRow();
             dr["col1"] = strItems[0];
             dr["col2"] = strItems[1];
             dr["col3"] = strItems[2];
             dr["col4"] = strItems[3];
             
             MyTable.Rows.Add(dr);

             colString = tr.ReadLine();
         }
     }
     catch(Exception e)
     {
         MessageBox.Show(e.Message);
     }

from a solution provided by John Baird in Message #1211637

txtPassword.Text = "ABCD"

txtPassword.Attributes.Add("value", "ABCD")

from a solution provided by Dmitry Litvak in Message #1211193

foreach (Form o in this.MdiChildren)
	o.Close();

from a solution provided by Bonnie Berent in Message #1172456