maximum Value from Ms access

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I want to take maximum value from a column of ms acess data base

i used the following code:

dr2=obj.SelCommand("select max([ID]) from tbl_registercomplaints");

int n = Convert.ToInt32(dr2.Read());

here dr2 is an object of datareader and obj is an object of class which includes definition for selection command.

in the above case,its returns only one value and its '1'
every time the value of n is 1.

the query analyser shows the correct result.

please help me to find a solutions for this.

Kishore R
Gis Solutions
www.uniquewebdeveloper.co.cc

Posted 5-Apr-10 21:46pm

kishore Rajendran

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Nicholas Butler · Answer 1 · 2010-04-05T22:09:00

Solution 1

IDataReader.Read() returns a bool which is true if a row was read.

You need to get the value of the first field in that row. Here is one way to do that:

C#

int maxId = dr2.GetInt32( 0 );

Nick

Posted 5-Apr-10 22:09pm

Nicholas Butler