can we have multiple datatables in a datareader ?

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Question Posted / wilbur j. pereira

18 Answers
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can we have multiple datatables in a datareader ?..

Answer / vrsanaidu

Yes, we can have multiple result set means multiple
datatable data in one datareader..., code as below

SqlConnection con = new
SqlConnection(ConfigurationSettings.AppSettings["con"]);
SqlCommand cmd = new SqlCommand("SELECT SiteName FROM
Sites;SELECT SiteCode FROM Sites", con);
cmd.Connection.Open();
SqlDataReader r = cmd.ExecuteReader();
do {
while(r.Read()) {
Response.Write(r.GetString(0) + "<br>");
}
} while (r.NextResult());

r.Close();
con.Close();
cmd = null;
r = null;
con = null;

Is This Answer Correct ?

47 Yes

1 No

can we have multiple datatables in a datareader ?..

Answer / satya

Yes. We can have multiple data tables in a datareader. You
can read the reuslt with datareader.NextResult method.

Is This Answer Correct ?

46 Yes

8 No

can we have multiple datatables in a datareader ?..

Answer / satya

we can not have multiple dataTables in a datareader but we can
have multiple reuslt Sets in a datareader.

Is This Answer Correct ?

17 Yes

7 No

can we have multiple datatables in a datareader ?..

Answer / ratnam

Yes. We can have multiple data tables in a datareader. You
can read the reuslt with datareader.NextResult method.

Is This Answer Correct ?

11 Yes

2 No

can we have multiple datatables in a datareader ?..

Answer / mayank jain

Yes we can have...
for that datareader have "NextResult" method. by using we
can use the multiple table.

Is This Answer Correct ?

7 Yes

1 No

can we have multiple datatables in a datareader ?..

Answer / sridhar para

we can not have multiple dataTables in a datareader but we
can have multiple reuslt Sets in a datareader.

We can have multiple dataTables in a dataset.

Is This Answer Correct ?

6 Yes

0 No

can we have multiple datatables in a datareader ?..

Answer / eduardo belmonte

Some people get confused.

A datareader can not have any amount of datatables.
Not even one of them.

Datatables exist by themmselves or inside a dataset, but
they are not generated nor filled by a datareader.

A datareader generates "only datarows", it doesn't generate
datatables. Each one of the datarows comply with a
structure as defined by the SELECT sql statement.

That SELECT statement may have columns that belong to one
or more "tables in the database". By example using a JOIN
or something similar. But listen well I said "tables" not
"datatables".

OK my friends?

Is This Answer Correct ?

12 Yes

8 No

can we have multiple datatables in a datareader ?..

Answer / rajesh n s

No multiple datables but multiple tableS from database with
query statement.

Is This Answer Correct ?

5 Yes

1 No

can we have multiple datatables in a datareader ?..

Answer / vivek

we can not have multiple databases in datareader

Is This Answer Correct ?

3 Yes

0 No

can we have multiple datatables in a datareader ?..

Answer / yuri

The question itself is incorrect. A data reader is a stream
of data, while a data table is a fixed structure. Having
said that, a data reader has one or more schema tables which
are of type DataTable. I suppose the correct question would
be: "can one data reader read from multiple SELECT
statements" and the answer to that question is YES.

Is This Answer Correct ?

0 Yes

0 No