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Dot Net Mafia

Group site for developer blogs dealing with (usually) Ionic, .NET, SharePoint, Office 365, Mobile Development, and other Microsoft products, as well as some discussion of general programming related concepts.

Cory Robinson's Blog

January 2008 - Posts

  • Sorting and Paging GridViews with Custom Object Collections

     

        protected void PendingWorkGridView_OnSorting(object sender, GridViewSortEventArgs e)

        {

            // For some reason the SortDirection property is not getting set automatically so set manually

            e.SortDirection = e.SortExpression.IndexOf(" DESC") > 0 ? SortDirection.Descending : SortDirection.Ascending;

     

            List<MyWorklistItem> pendingWorkItems = (List<MyWorklistItem>) Session["MyWorkItems"];

     

            pendingWorkItems.Sort(new MyWorklistItemComparer(e.SortBLOCKED EXPRESSION;

     

            // Update SortExpression for the column, toggling between ASC and DESC

            foreach (DataControlField column in PendingWorkGridView.Columns)

            {

                if (column.SortExpression == e.SortExpression)

                {

                    column.SortExpression = e.SortDirection == SortDirection.Ascending

                                                ? e.SortExpression + " DESC"

                                                : e.SortExpression.Replace(" DESC", string.Empty);

     

                    break;

                }

            }

     

            PendingWorkGridView.DataSource = pendingWorkItems;

            PendingWorkGridView.DataBind();

        }

     

        protected void PendingWorkGridView_OnPageIndexChanging(object sender, GridViewPageEventArgs e)

        {

            PendingWorkGridView.PageIndex = e.NewPageIndex;

            PendingWorkGridView.DataBind();

        }

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