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Getting an Error When Comparing Date to Null?

I am getting an error when comparing date to null. Otherwise datetime works fine.

Examples:

if (MyDate == null)
x = 1;

Thanks,

Dan

ASKER

The error I get is string is not instantiated. However when the variable if populated with a real datetime, the code works fine.

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What is the type of MyDate?

ASKER

It is of type DateTime. Can you send me an example of how to correctly write this check?

Thanks,

Dan

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That isn't the problem. The problem is that you can not do the comparison. You can not check to see if something equals null. You can only check to see if it is Not null.

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Then I don't understand the difference. And I found out that PHP has 'NULL' as a defined value meaning no value so you can check for it.

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