Question

We have a single table (25 columns int, text and datetime) with about a million of recrds, and we need to extract them from a SQL Lite database and then render to a wpf xamDataGrid, What is the fastest way of doing it in C#?

PLUS, what would be the most efficient way of doing it?

Options we have thought about:

• Getting a DataSet

• List of Entities

• DataReader

• Array of CSVs

Thanks in advance.

Answer 1

You can load the data using a background thread and populate the ObservableCollection using the Main thread’s Dispatcher, the priority being ContextIdle.

Dispatcher UIDispatcher = Dispatcher.CurrentDispatcher;
BackgroundWorker bw = new BackgroundWorker();
bw.DoWork += (sender,e) =>
{
    // Use a linq query to yield an IQueryable/IEnumerable List of data from DB
    foreach(Data data in DataList)   // Enumerated here
    {
        UIDispatcher.Invoke(DispatcherPriority.ContextIdle, new Action(() => 
        { 
            myOC.Add(data);
        }));
    }    
};