How to Test Anonymous Type Equality - LINQ: A Step Ahead Series Articles, samples and tutorials

How to Test Anonymous Type Equality - LINQ: A Step Ahead Series

First of all Anonymous Type Equality : If two or more anonymous types have same order, number and member declaratory type amd name then the same anonymous type is defined. So, its permissible to use the referencial equality operator on these types.

Now lets see the other face of the coin means of any of order, number and member declarator type and name is different then different anonymous type is defined for each. Then it throw compiler error while testing referential integrity.

Note:

Here you can use reflection to get the type information of anonymous types.

Use the Equals method (defined by all objects) to test equality of members.

Lets go through following lines :


var paternalMember = new {Father = "R k Arora", City = "Nangal Dam"};
var maternalMember = new {Mother = "Santosh Arora", City = "New Delhi"};

var fatherHome = new {Father = "R k Arora", City = "Nangal Dam"};
var motherHome = new {City = "New Delhi", Mother = "Santosh Arora"};

//Compare member equality:
paternalMember.Equals(fatherHome); //returns true
paternalMember.Equals(fatherHome); //error

If you want to know more about Anonymous Type-LINQ please refer to Anonymous Types in LINQ : A Step Ahead Series

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