how to bind data from database

once the query is executed in database side u get the records using data adaper. once fill the adapter records into dataset. dataset must has the records in the form of rows and columns. finally attach the datasource of the control with dataset. Then Datas will bind into the control

Ex:
Gridview1.datatsource = ds;
Gridview.DataBind()

You need to do

<br />
 < ((Customer)Container.DataItem).CustomerID.ToString(); ><br />

And to bind datasouce

Gridview1.datatsource = ds;
Gridview.DataBind()

SqlConnection con = new SqlConnection("Connection String");
SqlDataAdapter adp = new SqlDataAdapter("sqlquery",con);
DataSet ds = new DataSet();
adp.Fill(ds);