SQL Server :: Calculating Timespan Of Two Datetime?

Sep 25, 2010

in my application two time input will be passing to my sql stored procedures and I need to calculate the timespan between them. how can I do that? is there any way that I can do the following in t-sql?


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Unable to cast object of type 'System.TimeSpan' to type 'System.IConvertible'.

My Code is given below:

objsession.s_QuestionMasterTopicInsert(topic.Title, contentId,
topic.IsAvailable, ref strRet,
ref strRetMsg);
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