why we cannot use sqldatareader dr=new sqldatareader

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sqldatareader dr=new sqldatareader

Posted 17-Feb-10 19:35pm

tchaitanyareddy

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Christian Graus · Answer 1 · 2010-02-17T19:37:00

Solution 1

Because it has no public constructor. That means it's designed to be created by another object. I can't be bothered googling to read the MSDN and see how you're supposed to use it, perhaps you could try that for yourself ?

Posted 17-Feb-10 19:37pm

Christian Graus

Tim Yen · Answer 2 · 2010-02-18T01:56:00

Because the SqlDataReader already points to an open connection and an open query. You get the SqlDataReader when you ExecuteReader() on the SQLCommand object.

http://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqldatareader.aspx

You could consider an SqlDataReader as a pointer to the returned dataset waiting to be read.