using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Program
{
    class Program
    {
        static int Main(string[] args)
        {

            ShowEnvironmentDetails();
            Console.ReadLine();
            return -1;
        }
        static void ShowEnvironmentDetails()
        {
            // Print out the drives on this pc,
            // OS version and other details.
            foreach (string drive in Environment.GetLogicalDrives())
            Console.WriteLine("Drive: {0}", drive);
            Console.WriteLine("OS: {0}", Environment.OSVersion);
            Console.WriteLine("Number of processors: {0}",Environment.ProcessorCount);
            Console.WriteLine(".NET Version: {0}",Environment.Version);
            Console.WriteLine("User name: {0}", Environment.UserName);
            Console.WriteLine("Domain name: {0}", Environment.UserDomainName);
            Console.WriteLine("Machine name: {0}", Environment.MachineName);
            Console.WriteLine("Current directory: {0}", Environment.CurrentDirectory);
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Program
{
    class Program
    {
        static int Main(string[] args)
        {

            // Process any incoming args using 'for' keyword.
            for (int i = 0; i < args.Length; i++)
                Console.WriteLine("Arg: {0}", args[i]);

            Console.ReadLine();
            return -1;
        }
    }
}

Compile and run this program from the command line adding any arguments after exe file. For example running: ArgsTest.exe -arg1 -arg2 -arg2 will produce the following result:

The same as above but using ‘foreach’ keyword:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Program
{
    class Program
    {
        static int Main(string[] args)
        {

            // Get arguments using System.Environment.
            string[] theArgs = Environment.GetCommandLineArgs();
            foreach (string arg in theArgs)
                Console.WriteLine("Arg: {0}", arg);

            Console.ReadLine();
            return -1;
        }
    }
}

Another method using GetCommandLineArgs() method of the System.Environment type.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Program
{
    class Program
    {
        static int Main(string[] args)
        {

            // Get arguments using System.Environment.
            string[] theArgs = Environment.GetCommandLineArgs();
            foreach (string arg in theArgs)
                Console.WriteLine("Arg: {0}", arg);

            Console.ReadLine();
            return -1;
        }
    }
}

USE master;
GO
SELECT name, physical_name AS CurrentLocation, state_desc
FROM sys.master_files
WHERE database_id = DB_ID(N'master')

SELECT name, physical_name AS CurrentLocation, state_desc
FROM sys.master_files
WHERE database_id = DB_ID(N'tempdb')

SELECT name, physical_name AS CurrentLocation, state_desc
FROM sys.master_files
WHERE database_id = DB_ID(N'model')

SELECT name, physical_name AS CurrentLocation, state_desc
FROM sys.master_files
WHERE database_id = DB_ID(N'msdb')

Result:

MatchesDemo.zip

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Windows.Forms;

namespace MatchesDemo
{
    public partial class IPValidate : Form
    {
        public IPValidate()
        {
            InitializeComponent();
        }

        private void btnValidate_Click(object sender, EventArgs e)
        {
            // MessageBox.Show(mtxtIPAddress.Text);

            // create a regex object
            Regex checkIP = new Regex (@"\b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b");

            // create match
            Match matchIP = checkIP.Match(mtxtIPAddress.Text);

            if (checkIP.IsMatch(mtxtIPAddress.Text))
            {
                mtxtIPAddress.ForeColor = Color.Green;
            }
            else
                mtxtIPAddress.ForeColor = Color.Red;
        }
    }
}

Description: This example demonstrates the usage of IsMatch() method in C#.NET

 using System;
using System.Text.RegularExpressions;

namespace IsMatchDemo
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(@"This will find a match for the regular expression'[A-Z]\d\d'.");
            Console.WriteLine("Enter a test string now.");

            // create regex to match any alphabetical character, followed by a digit
            Regex myRegex = new Regex(@"[A-Z]\d\d", RegexOptions.IgnoreCase);

            // create a string variable to store input from user
            string inputString;

            // read input
            inputString = Console.ReadLine();

            // create object variable Match as inheriting from Match class
            Match myMatch = myRegex.Match(inputString);

            string outputString = "The following option(s) are set: ";

            // print selected regex option
            Console.WriteLine(outputString + myRegex.Options.ToString());

            // print string typed by user
            Console.WriteLine("You entered the string: '" + inputString + "'.");

            // check wether the match occured
            if (myRegex.IsMatch(inputString))
                Console.WriteLine("The match '" + myMatch.ToString() + "' was found in the string you entered.");
            else
            Console.WriteLine("No match was found.");

            Console.ReadLine();
        }
    }
}
 

Output:

This will find a match for the regular expression’[A-Z]\d\d’.
Enter a test string now.
 -”This is a test text: z75. Is this a match?”
The following option(s) are set: IgnoreCase
You entered the string: ‘This is a test text: z75. Is this a match?’.
The match ‘z75′ was found in the string you entered.

' ----------------------------------------
'  Required Imports :
'
'  System.Xml
' ----------------------------------------

For Each attribute As XmlAttribute In node.Attributes

Next

' ----------------------------------------
'  Required Imports :
'
'  System.Xml
' ----------------------------------------

Dim newElement As XmlNode
newElement = xmlDoc.CreateElement("Keyword")
newElement.InnerText = "Value"
xmlDoc.AppendChild(newElement)