public void CreateSqlDataAdapter() {
    string mySelectText = "SELECT * FROM Categories ORDER BY CategoryID";
    string mySelectConn = "Data Source=localhost;Integrated Security=SSPI;Initial Catalog=northwind";
    SqlDataAdapter myDataAdapter = new SqlDataAdapter(mySelectText,mySelectConn);
    myDataAdapter.InsertCommand.CommandText = "INSERT INTO Categories(CategoryName, Description, Picture) Values(@CategoryName,@Description,@Picture)";
    myDataAdapter.InsertCommand.Connection = (SqlConnection) myDataAdapter.SelectCommand.Connection;
 }