/// <summary>
/// Query the database to get a single value
/// </summary>
/// <typeparam name="T">Return type</typeparam>
/// <param name="EstablishedConnection">An open and established connection to a MySQL database</param>
/// <param name="QueryString">SQL query to retrieve the value requested</param>
/// <param name="Parameters">Dictionary of named parameters</param>
/// <param name="ThrowException">Throw exception or swallow and return default(T)</param>
/// <returns>Single value of type T</returns>
internal static T GetScalar <T>(MySqlConnection EstablishedConnection, string QueryString, Dictionary <string, object> Parameters = null, bool ThrowException = true, MySqlTransaction SqlTransaction = null)
{
return(DatabaseWorkHelper.DoDatabaseWork <T>(EstablishedConnection, QueryString,
(cmd) =>
{
cmd.Parameters.AddAllParameters(Parameters);
var scalarResult = cmd.ExecuteScalar();
return DatabaseCoreUtilities.ConvertScalar <T>(scalarResult);
},
ThrowException: ThrowException, UseTransaction: SqlTransaction != null, SqlTransaction: SqlTransaction));
}
internal static DataTable GetDataTable(MySqlConnection EstablishedConnection, string QueryString, Dictionary <string, object> Parameters = null, bool ThrowException = true, MySqlTransaction SqlTransaction = null)
{
return(DatabaseWorkHelper.DoDatabaseWork <DataTable>(EstablishedConnection, QueryString,
(cmd) =>
{
cmd.Parameters.AddAllParameters(Parameters);
using (var tableAdapter = new MySqlDataAdapter())
{
tableAdapter.SelectCommand = cmd;
tableAdapter.SelectCommand.CommandType = CommandType.Text;
var outputTable = new DataTable();
tableAdapter.Fill(outputTable);
return outputTable;
}
}, ThrowException: ThrowException, UseTransaction: SqlTransaction != null, SqlTransaction: SqlTransaction));
}
