Creating sql database connection in asp.net web application through C#

protected void Button1_Click(object sender, EventArgs e)

{

SqlConnection myConn = new SqlConnection();

myConn.ConnectionString = “Connection string(See Below for this — )COPY PASTE HERE“;

myConn.Open();

string strqry = “Insert into students values (” + TextBox1.Text +

“,’” + TextBox2.Text + “‘,’” + TextBox3.Text + “‘)”;

SqlCommand myCom = new SqlCommand(strqry, myConn);

int numrow = myCom.ExecuteNonQuery();

myConn.Close();

}