Do you know how to avoid problems in if-statements?

Try to avoid problems in if-statements without curly brackets and just one statement which is written one line below the if-statement. Use just one line for such if-statements. If you want to add more statements later on and you could forget to add the curly brackets which may cause problems later on.

if (ProductName == null) ProductName = string.Empty; if (ProductVersion == null)
 ProductVersion = string.Empty; if (StackTrace == null) StackTrace = string.Empty;

if (ProductName == null) 
{ 
 ProductName = string.Empty; 
} 
if (ProductVersion == null)
{ 
 ProductVersion = string.Empty; 
} 
if (StackTrace == null) 
{ 
 StackTrace = string.Empty;
}