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Delegate type '<delegatename>' of event '<eventname>' is not CLS-compliant

An Event Statement uses a delegate to specify its signature, but the Delegate Statement is marked as <CLSCompliant(False)> or is not marked.

When you apply the CLSCompliantAttribute attribute to a programming element, you set the attribute's isCompliant parameter to either True or False to indicate compliance or noncompliance. There is no default for this parameter, and you must supply a value.

If you do not apply CLSCompliantAttribute to an element, it is considered to be noncompliant.

By default, this message is a warning. For information on hiding warnings or treating warnings as errors, see Configuring Warnings in Visual Basic.

Error ID: BC40050

To correct this error

  • If you require CLS compliance and have control over the definition of the delegate, apply CLSCompliantAttribute to its declaration to mark it as <CLSCompliant(True)>.

  • If you do not have control over the definition of the delegate or cannot mark it as compliant, remove the CLSCompliantAttribute from the Event statement or mark it as <CLSCompliant(False)>.