Bind the data to the GridView. Example: protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { SqlConnection connection = new SqlConnection(connectionString); SqlDataAdapter adapter = new SqlDataAdapter("SELECT CustomerID, CustomerName FROM Customers", connection); DataTable dataTable = new DataTable();

Short answer: dapter.Fill(dataTable); GridView1.DataSource = dataTable; GridView1.DataBind(); } } Here, GridView1 is bound to the data returned from the SQL query (SELECT CustomerID, CustomerName FROM Customers), and the DataBind() method displays it in the grid.

Explain a bit more

dapter.Fill(dataTable); GridView1.DataSource = dataTable; GridView1.DataBind(); } } Here, GridView1 is bound to the data returned from the SQL query (SELECT CustomerID, CustomerName FROM Customers), and the DataBind() method displays it in the grid. dapter.Fill(dataTable); GridView1.DataSource = dataTable; GridView1.DataBind(); } } Here, GridView1 is bound to the data returned from the SQL query (SELECT CustomerID, CustomerName FROM Customers), and the DataBind() method displays it in the grid.

Real-world example (ShopNest)

ShopNest opens a SqlConnection only for the query, then disposes it (using). Connection pooling reuses physical connections automatically.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.