Operator Overloading with C# Extension Methods
- by Blinky
I'm attempting to use extension methods to add an operater overload to the C# StringBuilder class. Specifically, given StringBuilder sb, I'd like sb += "text" to become equivalent to sb.Append("text");
Here's the syntax for creating an extension method for StringBuilder:
public static class sbExtensions
{
public static StringBuilder blah(this StringBuilder sb)
{
return sb;
}
}
It successfully adds the "blah" extension method to the StringBuilder.
Unfortunately, operator overloading does not seem to work:
public static class sbExtensions
{
public static StringBuilder operator +(this StringBuilder sb, string s)
{
return sb.Append(s);
}
}
Among other issues, the keyword 'this' is not allowed in this context.
Are adding operator overloads via extension methods possible? If so, what's the proper way to go about it?
