CodeXchange: User Contributed Snippets

Provides the reverse of a passed in string

Marc Piulachs — Mon, 19 Mar 2007 22:14:55 GMT

    Private Function Reverse(ByVal value As String) As String
        If value.Length > 1 Then
            Dim workingValue As New System.Text.StringBuilder
            For position As Int32 = value.Length - 1 To 0 Step -1
                workingValue.Append(value.Chars(position))
            Next
            Return workingValue.ToString
        Else
            Return value
        End If
    End Function

Detect running Visual Studion instance

Marc Piulachs — Mon, 08 Mar 2010 11:16:40 GMT

        private bool IsVisualStudioRunning()
        {
            System.Diagnostics.Process[] processes = System.Diagnostics.Process.GetProcesses();
            try
            {
                foreach (System.Diagnostics.Process p in processes)
                {
                    if (p != null && p.MainModule != null)
                    {
                        String fileName = Path.GetFileName(p.MainModule.FileName);
                        if (String.Compare(fileName, "devenv.exe", true) == 0)
                            return true;
                    }
                }
            }
            catch
            {
            }
            return false;
        }

Resizing a Bitmap image

Marc Piulachs — Tue, 09 Mar 2010 08:59:48 GMT

private static Bitmap ResizeBitmap(Bitmap sourceBMP, int width, int height )
{
            Bitmap result = new Bitmap(width, height);
            using (Graphics g = Graphics.FromImage(result))
                g.DrawImage(sourceBMP, 0, 0, width, height);
            return result;
}

Read file line by line

Marc Piulachs — Tue, 09 Mar 2010 08:58:19 GMT

StreamReader reader = new StreamReader("path to your file");
string line = string.Empty;

while((line = reader.ReadLine()) != null)
{
     Console.WriteLine (line);
}
reader.Close();

Basic Encryption/Decryption

Marc Piulachs — Tue, 09 Mar 2010 09:01:35 GMT

using System;
using System.Security.Cryptography;
using System.Text;

public static class Encryption
{
   public static string Encrypt(string input, string key)
   {
      byte[] inputArray = UTF8Encoding.UTF8.GetBytes(input);
      TripleDESCryptoServiceProvider tripleDES = new TripleDESCryptoServiceProvider();
      tripleDES.Key = UTF8Encoding.UTF8.GetBytes(key);
      tripleDES.Mode = CipherMode.ECB;
      tripleDES.Padding = PaddingMode.PKCS7;
      ICryptoTransform cTransform = tripleDES.CreateEncryptor();
      byte[] resultArray = cTransform.TransformFinalBlock(inputArray, 0, inputArray.Length);
      tripleDES.Clear();
      return Convert.ToBase64String(resultArray, 0, resultArray.Length);
   }

   public static string Decrypt(string input, string key)
   {
      byte[] inputArray = Convert.FromBase64String(input);
      TripleDESCryptoServiceProvider tripleDES = new TripleDESCryptoServiceProvider();
      tripleDES.Key = UTF8Encoding.UTF8.GetBytes(key);
      tripleDES.Mode = CipherMode.ECB;
      tripleDES.Padding = PaddingMode.PKCS7;
      ICryptoTransform cTransform = tripleDES.CreateDecryptor();
      byte[] resultArray = cTransform.TransformFinalBlock(inputArray, 0, inputArray.Length);
      tripleDES.Clear();
      return UTF8Encoding.UTF8.GetString(resultArray);
   }
}