How do I properly validate posted numeric values in asp.net mvc?

Are you examining ModelState. IsValid? It should already be catching this.

Correct, ModelState. IsValid is false. The error message is not very helpful however.

I would like to have a friendlier message such as "You can't put a string in a decimal field, dummy. " It seems that I have to actually get the form value in order to do that sort of validation. – Aaron Palmer Sep 11 '09 at 18:12 No, you don't have to get the value from the form; the user's submitted value is in the ModelStateCollection.As is the specific error.

– Craig Stuntz Sep 11 '09 at 20:32 Ok, ModelStateCollection has ErrorMessage, which is empty, and Exception... which, when drilling down into InnerException a couple times I get something useful. Of course, the most useful message is not the innermost message, or the outermost... sigh – Aaron Palmer Sep 14 '09 at 20:08.

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