How Do I Create an Expression> with Type Parameters from a Type Variable

Question

I\'d like to write a statement like the following:

Expression> filter = x => true;

Except instead of

Answer 1

You'll need to create an expression with a body set to the constant true and a parameter of the type of your type. There is an Expression to do each of these things:

Type type = typeof(object);
var lambda = Expression.Lambda(
    Expression.Constant(true), 
    Expression.Parameter(type, "parameter"));