ADO.NET problem

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Hi everybody,
I have one problem... I read 20000 rows at a time, but I use only one row and after processing, I use another row.
How can I do this?
Please reply.

See here:

con = new SqlConnection(nrdet);
       SqlDataAdapter da = new SqlDataAdapter("select E1,SM1,R1,E2,SM2,R2,E3,SM3,R3,E4,SM4,R4,E5,SM5,R5,E6,SM6,R6,E7,SM7,R7,E8,SM8,R8,E9,SM9,R9,E10,SM10,R10 From TOTAL_NR WHERE SCHEME='" + DropDownList1.SelectedItem.Text + "' AND YR='" + DropDownList2.SelectedItem.Text + "' AND RESULT=3", con);
       DataSet ds = new DataSet();
       da.Fill(ds);

Actually, here there are 2000 rows, but I compare rows one after another.

I use E1,SM1,R1 values first I compare those results after E2,SM2,R2.....

Posted 7-Jun-10 20:20pm

kiran kumar reddy

Updated 8-Jun-10 1:43am

Deeksha Shenoy

v4

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Abhinav S · Answer 1 · 2010-06-07T20:35:00

Solution 1

You can loop through the result set?
I may not have understood your question properly - maybe you need to post some code here.

Posted 7-Jun-10 20:35pm

Abhinav S

Dylan Morley · Answer 2 · 2010-06-08T01:34:00

Get a reference to the DataTable object and loop through the rows collection

DataSet ds = new DataSet();
da.Fill(ds);

DataTable dt = ds.Tables[0];

foreach(DataRow dr in dt.Rows)
{
    // Now use the dararow object to access your column fields
    if (Convert.ToInt32(dr["YourIntegerFieldName"]) == WhateverTest)
    {
        // Do something?
    }
}

prasadbuddhika · Answer 3 · 2010-06-08T01:54:00

hmm when you use the dataset you take all the records at once and keep them in the memory , while keeping them in memory you compare the values in the row,

but i would like to suggest you to use the SqlDataReader which takes only one record at a time , it will be good in performance wise , but u need to keep the db connection while process completes , if you want to use a disconnected data accessing, or editing data in the record, dataset is good .
but in this case using dataset means you keep 20000 records in memory.

ADO.NET problem

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