I have a webcontrol which adds a textbox and a requiredFieldValidator inside of its CreateChildControls method.

I always add the validator in the CreateChidControls method to the controlcollection - here's the reason why:

I have an IsRequired property on the webcontrol that sets the child validator enabled or disabled depending on this property of my webcontrol. If I don't always include it (so its rendered), I will get a viewstate mismatch when the control moves from IsRequired to NOT isRequired.

When the IsRequired is set to false, the framework does not include a Page_Validators declaration in the javascript - which is proper.

However it appears, especially when my control is placed inside a Panel control, that the framework sometimes gets confused and tries to validate the page even when the validator's Enabled property is set to False- results in a Page_Validators undefined error.

Anyone have similiar experiences?

Post some code.

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Thanks,

Teemu Keiski
Finland, EU