public void query(String query)
{
try
{
openConnection();
SqlCommand queryCommand = new SqlCommand(query, getConnectionString());
SqlDataReader queryCommandReader = queryCommand.ExecuteReader();
closeConnection();
}
catch (SqlException ex)
{
closeConnection();
SqlExceptionManager.handlerException(ex);
}
}
public void executeQueryWithParameters(String query, Dictionary <String, Object> dictionary)
{
try
{
openConnection();
SqlCommand command = new SqlCommand(query, getConnectionString());
foreach (String key in dictionary.Keys)
{
command.Parameters.AddWithValue(key, dictionary[key]);
}
command.ExecuteNonQuery();
closeConnection();
}
catch (SqlException ex)
{
closeConnection();
SqlExceptionManager.handlerException(ex);
}
}
public DataTable select_query(String query)
{
try
{
openConnection();
SqlCommand queryCommand = new SqlCommand(query, getConnectionString());
SqlDataReader queryCommandReader = queryCommand.ExecuteReader();
DataTable dataTable = new DataTable();
dataTable.Load(queryCommandReader);
closeConnection();
return(dataTable);
}
catch (SqlException ex)
{
SqlExceptionManager.handlerException(ex);
return(null);
}
}
