I have a delegate that is built at runtime from a LambdaExpression:
Func<T, bool> predicateDelegate = (Func<T, bool>)expression.Compile();
predicateDelegate.Invoke(item);
When I invoke it, I get a NullReferenceException with the following stack:
at lambda_0(ExecutionScope , String )
at System.Query.Func`2.Invoke(A0 arg0)
[...]
Any ideas on what I might be doing wrong
Thanks.
NullReferenceException when invoking delegate compiled from LambdaExpression
Expert
The expression is "v != null && v.Length > 0 && v.Length < 60". The problem seems to be with "null" - the expression appears to be parsed as:
expression = {v => AndAlso(AndAlso(op_Inequality(v, null.ToString()), GT(v.Length, 0)), LT(v.Length, 60))}
beedub80