how to get the query value in C#

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Hi All
I am doing code in C# windows application where the query value I have to get in C#
Below I give the code

SQL

string qry = "Select COUNT(rack)FROM Report ";
OleDbCommand cmd = new OleDbCommand();
cmd = new OleDbCommand(qry, conn);
OleDbDataReader dr = cmd.ExecuteReader();

where I check that the SQL query given total number of row is 19
But how can I store that in C#
Thanks To All

Posted 30-Jul-12 21:15pm

IndrajitDasgupat

Updated 30-Jul-12 21:16pm

_Amy

v2

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3 solutions

Solution 2

Hi,
You can use OleDbDataAdapter[^] to get the values and store it to DataTable[^] or DataSet[^]
Try this:

C#

DataTable dt = new DataTable();
string qry = "Select COUNT(rack)FROM Report";
OleDbCommand cmd = new OleDbCommand();
cmd = new OleDbCommand(qry, conn);
OleDbDataAdapter adapter = new OleDbDataAdapter(cmd);
adapter.Fill(dt);//Here you are having a datatable with all your 19 columns

All the best.
--Amit

Posted 30-Jul-12 21:21pm

_Amy

Solution 3

C#

SqlCommand cmd=new SqlCommand("Select COUNT(rack)FROM Report");
cmd.Connection=con;
con.Open();
int i=cmd.ExecuteScalar();
con.Close();

The variable i will have the count now.

Posted 30-Jul-12 21:24pm

Santhosh Kumar Jayaraman

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Mehdi Gholam · Accepted Answer · 2012-07-30T21:18:00

Solution 1

For single values you need to use ExecuteScalar : http://msdn.microsoft.com/en-us/library/system.data.oledb.oledbcommand.executescalar.aspx[^]

Posted 30-Jul-12 21:18pm

Mehdi Gholam