C# Get Application Version via runtime

Setting Custom version number at project properties under application assembly information

Get application version via runtime code:

System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString();

C# Read Registry Method

To get value from registry. Sample code:

 
//include this
//for registry read write
using Microsoft.Win32; 

public string ReadRegistryValue(string KeyName)
{
            
    // Opening the registry key
    RegistryKey key = Registry.LocalMachine;
    // Open a subKey as read-only
    RegistryKey subkey = key.OpenSubKey(@"SOFTWARE\SKYPE\PHONE");
            
    // If the RegistrySubKey doesn't exist -> (null)
    if (subkey == null)
    {
        return null;
    }
    else
    {
        try
        {
            //return value
            return (string)subkey.GetValue(KeyName);
        }
        catch (Exception e)
        {
            //display error
            MessageBox.Show("Reading registry Exception " + e.Message.ToString());
            return null;
        }
    }
}

//method usage
 MessageBox.Show(ReadRegistryValue("SkypePath"));

Additional Reading at :

1. MSDN RegistryKey