What is mean By System.Linq.Expressions.Expression> IsEqual(type3 parameter)?

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Hello Codeproject,

what it mean by this expression??

C#

public  enum YesNo : int
   {
       Yes = 1, No = 2
   }

   public class TestTableExt
   {

       public static System.Linq.Expressions.Expression<Func<Table4,bool>> IsEqual(YesNo i)
       {
           return ((a) => a.Num == (int?)i);
       }

   }

Can anybody help me on this to understand????????

Regards

Muhammed Abdussalam

Posted 11-Jan-12 3:03am

Salam6331

Updated 11-Jan-12 5:31am

Wendelius

v2

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Vlad-Dragos · Accepted Answer · 2012-01-11T03:37:00

Hi Salam6331,
I guess your question points this piece of code:

C#

public static System.Linq.Expressions.Expression<Func<Table4,bool>> IsEqual(YesNo i)
            {
                  return ((a) => a.Num == (int?)i);
            }

What really happens here is you define an expression tree that describes a lambda expression.
Later you can compile this into a delegate or method as you want by calling methods on the result obtained after calling IsEqual(YesNo.No) for e.g. .

Vivek Krishnamurthy · Accepted Answer · 2012-01-11T03:36:00

Solution 1

Your question is not difficult, if you understand Func, your can answer it yourself. I suggest you do that:
Func<t,res> - Store anonymous methods in a generalized and simple way.

You can read more about Func here
C# Func Type[^]
Func on msdn[^]

Posted 11-Jan-12 3:36am

Vivek Krishnamurthy

Updated 11-Jan-12 3:37am

v2