C# using statement catch error

Question

I am just looking at the using statement, I have always known what it does but until now not tried using it, I have come up with the below code:

 using (SqlComma         


        

Answer 1

Minor correction to the example: SqlDataAdapter also needs to be instantiated in a using statement:

using (SqlConnection con = new SqlConnection(Settings.Default.qlsdat_extensionsConnectionString))
using (SqlCommand cmd = new SqlCommand(reportDataSource, con))
{
    cmd.CommandType = CommandType.StoredProcedure;
    cmd.Parameters.Add("@Year", SqlDbType.Char, 4).Value = year;
    cmd.Parameters.Add("@startDate", SqlDbType.DateTime).Value = start;
    cmd.Parameters.Add("@endDate", SqlDbType.DateTime).Value = end;
    con.Open();

    DataSet dset = new DataSet();
    using (SqlDataAdapter adapter = new SqlDataAdapter(cmd))
    {
        adapter.Fill(dset);
    }
    this.gridDataSource.DataSource = dset.Tables[0];
}