CODEWITHSUNDEEP
c#datatablepaginationdataviewpagedlist
Mykhil
Mykhil

Reputation: 25

Is there any way I can implement pagination using a DataView?

I have a large database and anytime I try to load it to the DataGridView, the UI hangs. I tried to use a BackGroundWorker for the job but that was no use. I therefore decided to use pagination (Thanks to a tutorial from FoxLearn).

My problem is that I have been unable to implement pagination using a DataView. I tried implementing it on my DataTable and I still faced the same problem.

Below is my attempted code:

    int pageNumber = 1;
            IPagedList<DataView> list;
    DataView transactionView = analyticsDataTable.DefaultView;
    
            private async void startPagination()
            {
                list = await GetPagedListAsync();
                backBtn.Enabled = list.HasPreviousPage;
                forwardBtn.Enabled = list.HasNextPage;
                AccountDGV.DataSource = list.ToList();
                pageLbl.Text = String.Format("Page {0} of {1}", pageNumber, list.PageCount);
    
            }
    
            public async Task<IPagedList<DataView>> GetPagedListAsync(int pageNumber = 1, int pageSize = 10)
            {
    
                return await Task.Factory.StartNew(() =>
                {
                    return transactionView.ToPagedList(pageNumber, pageSize);  
                });
            }

The error to the above code is:

'DataView' does not contain a definition for 'ToPagedList' and no accessible extension method 'ToPagedList' accepting a first argument of type 'DataView' could be found (are you missing a using directive or an assembly reference?)

Upvotes: -2

Views: 765

Answers (1)

Mykhil
Mykhil

Reputation: 25

So this is how I solved the problem

public async Task<IPagedList<DataRowView>> GetPagedListAsync(int pageNumber = 1, int pageSize = 6)
{
   return await Task.Factory.StartNew(() =>
   {
        //Create a list of the rows in the DataView
        List<DataRowView> li = (from DataRowView row in transactionView select row).ToList();

        //Return a collection of the created list
        return li.AsEnumerable().ToPagedList(pageNumber, pageSize);
   });
}

Upvotes: 0

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