Difference between IsOptional and MustUnderstand DataMember Attribute in WCF DataContract?

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What are the purpose of IsOptional and MustUnderstand?
What are difference between IsOPtional and MustUnderstand for DataMemeber in DataContract under WCF?
How can we decide what should use with DataMemeber?
Can we use both on same DataMemeber?

Posted 11-Apr-13 15:22pm

Sandeep Shekhawat

Updated 12-Apr-13 6:28am

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