MVC :: Use Of Html.ValidationMessage?

Jan 6, 2010

m so confuse what is the use Html.ValidatinMessage.Why it is not dispaly on page.I awnt to validate a field.can i use given Html.ValidationMessage.what is the error in following code-

if (formvalues["firstname"].Trim()== "")
{
ModelState.AddModelError("firstname","Required firstname.");

[code]...

i want that if value is not valid values should not be insert otherwise should be inserted.When I use given code values didnot insert but i have to again give values of other text boxes.can it possible values will not b inserted again.and meassge how can display. Is it not possible without javascript?

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[Code]....

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