how to use for loop to read data from mysql table - mysql

Question

I have mysql Database and i want to read data from there in my web application with for loop instead of foreach loop.
MySqlConnection conn = new MySqlConnection(connStr);
conn.Open();
string query = "SELECT * FROM survey ORDER BY datetime DESC";
MySqlCommand com = new MySqlCommand(query, conn);
com.CommandTimeout = 0;
MySqlDataAdapter da = new MySqlDataAdapter(com);
DataTable ds = new DataTable();
da.Fill(ds);
conn.Close();
foreach (DataRow item in ds.Rows)
{
string unique = item.ItemArray[4].ToString();
var sur = db2.VoipSurveys.Where(a => a.UniqueId == unique).SingleOrDefault();
if (sur == null)
{
VoipSurvey vs = new VoipSurvey()
{
Date = Convert.ToDateTime(item.ItemArray[1]),
Point = Convert.ToInt32(item.ItemArray[2]),
CallerId = item.ItemArray[3].ToString(),
UniqueId = item.ItemArray[4].ToString(),
AgentNumber = item.ItemArray[5].ToString(),
AgentName = item.ItemArray[6].ToString(),
QueueNumber = item.ItemArray[7].ToString()
};
db2.VoipSurveys.Add(vs);
db2.SaveChanges();
}
}
I need reading data from specific index like reading data in mysql table from this Date until now. and i think my problem would be solved with for loop

Answer 1

You can use a DataView RowFilter also:
// Create a DataView
DataView dv = new DataView(dt);
dv.RowFilter = " (Date >= #" +
Dateyouwanttouse +
"# And Date <= #" +
DateTime.Now +
"# ) ";
Simply do this:
foreach (DataRowView rowView in dv)
{
DataRow row = rowView.Row;
// Do something //
}