C# Registry Operations

This article describes performing different-different operations on the Windows registry.

//Create a Particular Registry.
private void btnCreateRegistry_Click(object sender, EventArgs e)
{     
     
RegistryKey RegCreateKey = default(RegistryKey);     
RegCreateKey = My.Computer.Registry.CurrentUser.CreateSubKey("ApplicationName\\CompanyName");
}
    
//Delete a Partucular Registry.
private void btnDeleteRegistry_Click(object sender, EventArgs e)
{     
  using (RegistryKey RegDeleteKey = My.Computer.Registry.LocalMachine.OpenSubKey("SoftwareName"))     
     {          
          RegDeleteKey.DeleteSubKey("KeyToDelete");     
     }
} 

//Read a Particular Registry.
private void btnReadRegistry_Click(object sender, EventArgs e)
{
   object RegReadKeyValue = null;
   RegReadKeyValue = My.Computer.Registry.GetValue("HKEY_CURRENT_USER\\SoftwareName\\CompanyName\\KeyName", "ValueName", "DefaultValue");
}

//Write a Particular Registry.
private void btnWriteRegistry_Click(object sender, EventArgs e)
{
     My.Computer.Registry.SetValue("HKEY_CURRENT_USER\\Software\\CompanyName\\KeyName", "Name", "Value");
}   

//Check the registry is exist or not?
private void btnCheckRegistry_Click(object sender, EventArgs e)
{    
     bool IsRegExists = false;    
     try    
     {         
          //Here it will check the particular given registry.     
          if (My.Computer.Registry.CurrentUser.OpenSubKey("Software\\Company\\Application\\1.1") != null)         
          {              
               //Given registry key is exist...              
               IsRegExists = true;         
          }    
     }    
     finally    
     {         
          My.Computer.Registry.CurrentUser.Close();    
     }
}