Databinding

السلام عليكم ورحمه الله و بركاتة

[windows application

private void button1_Click(object sender, EventArgs e)
		{
			SqlConnection con = new SqlConnection("Password=asd;Persist Security Info=True;User ID=sa;Initial Catalog=ajax;Data Source=NEWLOOK");
			SqlDataAdapter da = new SqlDataAdapter("select * from admin", con);
			DataSet ds = new DataSet();
			da.Fill(ds);
			dataGridView1.DataSource = ds.Tables[0];
		}
web application

private void button1_Click(object sender, EventArgs e)
		{
			SqlConnection con = new SqlConnection("Password=asd;Persist Security Info=True;User ID=sa;Initial Catalog=ajax;Data Source=NEWLOOK");
			SqlDataAdapter da = new SqlDataAdapter("select * from admin", con);
			DataSet ds = new DataSet();
			da.Fill(ds);
			GridView1.DataSource = ds;
			GridView1.databind();
		}

why in web appication ,we use databind method,but

in windows application we does not use any databinding????

رمضان كريم