Reading rows of a table

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Hi I am looking for some code that will read all the rows of a table called table1 every 10 second....anyone knows how to do it best...thanks

Posted 9-Nov-11 20:59pm

EricThe

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OriginalGriff · Answer 1 · 2011-11-09T21:05:00

Assuming that you mean an SQL table, then just put the normal code in a Timer event.
Try:

using (SqlConnection con = new SqlConnection(strConnect))
    {
    con.Open();
    using (SqlCommand com = new SqlCommand("SELECT * FROM MyTable", con))
        {
        using (SqlDataReader reader = com.ExecuteReader())
            {
            while (reader.Read())
                {
                ...
                }
            }
        }
    }

But it is probably a very bad idea to do it - you will cause enormous amounts of unnecessary traffic, and work for the SQL server. What are you trying to achieve, that you think this will be a good idea? There may be a better way.

lavikgupta · Answer 2 · 2011-11-09T21:13:00

Solution 2

Use timer..

private void timer1_Tick(object sender, EventArgs e)
        {
        // Your data retrieval code

          }

Posted 9-Nov-11 21:13pm

lavikgupta

Updated 9-Nov-11 22:21pm

v2

Comments

EricThe 10-Nov-11 3:16am

thanks how would you loop through each row of table???

lavikgupta 10-Nov-11 13:07pm

dr.Read() returns false when all rows of table has been read.

so -->
while(dr.Read())
{
//read columns from data reader like dr[0],dr[1]......
}