Answer / alb.shah

Creating a Database Connection at Run Time
Create the data connection object.
Create a data adapter object.
Create a data set object.
Invoke methods on the adapter object to fill or update the
data set.
Use data binding or another technique to display the data
from the data set.

Answer / kaarthikeyan

establish a connection and declare sqldataadapter,dataset
sda=new sqldataadapter("select the appropriate
table",connectionobj);
ds=new dataset();
sda.fill(ds);
gridview1.datasource=ds;
gridview1.databind();

Answer / kinjal panchal

first of all write namespace in your page.
using Syste.data.sqlclient;

//code
sqlconnection cn=new sqlconnection();
cn.open();
sqlcommand cmm=new sqlcommand("write select query here",cn);
sqldataAdupter da=new sqldataAdupter(cmm);
datatable dt=new datatable();
da.fill(dt);
cn.close();

suppose u have gridview control then

gridview.datasource=dt;
gridview.databind();

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