How to for date is not null or nothing condition

How can i write a condition for like isdate(Fields!DueDate.value)

I tried isdate but i am getting an error message. what is the equivalent for isdate in sql server reporting services formula fields or calculated fields expression.

Thank you very much for the information.

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=IIF(isdate(Fields!DueDate.Value), ................

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Reddy,

Try

=IIf(IsDate(Fields!DueDate.value),"True","false")

This should work for you.

Ham

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Sorry should have read it all.

=IIf(Fields!DueDate.value is nothing,"False",IsDate(Fields!DueDate.value),"True","false"))

Ham

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There was a program error, I left out the next IIF statement

IIf(Fields!DueDate.value is nothing,"False",IIf(IsDate(Fields!DueDate.value),"True","false"))