Asp.Net MVC attributes

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I have a question, When I apply a validation attribute (which is having associated validator to it) twice on a property, for eg I have number1 which should be lesser than number2 and number3. so I apply something like below.

[LessThan("Number2",ErrorMessage="Error Message1")]
[LessThan("Number3",ErrorMessage="Error Message2")]
public int Number1

problem here is when it evaluates Number1 < Number3 to true, then it is not checking for Number1 <Number2, it assumes that validation for the whole field is passed. How can we ensure, we go through each validation (attribute rule) and make sure the correct Validation error is returned.

Posted 10-Jul-11 4:54am

Ramu Sangabathula Original

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Salmen Essridi 17-Jul-11 11:23am

It's MVC2 or MVC3 ?

3 solutions

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Ramu Sangabathula Original · Answer 1 · 2011-07-13T18:36:00

Solution 1

I found a way to do it, using reflection, reading all the attributes applied on a property in the validator. I can post the code if any body is looking for the same problem.

Posted 13-Jul-11 18:36pm

Ramu Sangabathula Original

Ramu Sangabathula Original · Answer 2 · 2011-07-17T01:36:00

Solution 2

also another solution, there is a TypeID in Property in Attribute class, which we can override in the derived class and return new object() in the get property which solves the problem.

Posted 17-Jul-11 1:36am

Ramu Sangabathula Original

Salmen Essridi · Answer 3 · 2011-07-17T05:35:00

It's a very good question, i faced this problem.
So the smart solution was by doing a custom Data annotations.

try this links to find out.

http://byatool.com/mvc/custom-data-annotations-with-mvc-how-to-check-multiple-properties-at-one-time/[^]

http://haacked.com/archive/2009/11/19/aspnetmvc2-custom-validation.aspx[^]

I hope that helps. Good luck.

Asp.Net MVC attributes

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