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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Accountant	Howard Snyder	Spain	1 2 3 4 5
2	Owner	Matti Karttunen	Spain	1 2 3 4 5
3	Sales Consultant	Elizabeth Lincoln	Germany	1 2 3 4 5
4	Accountant	Georg Pipps	England	1 2 3 4 5
5	Marketing Manager	Howard Snyder	Bulgaria	1 2 3 4 5
6	Accounting Manager	Patricio Simpson	USA	1 2 3 4 5
7	Marketing Manager	Antonio Moreno	USA	1 2 3 4 5
8	Sales Representative	Pascale Cartrain	Germany	1 2 3 4 5
9	Sales Consultant	Paul Henriot	England	1 2 3 4 5
10	Sales Consultant	Hanna Moos	Italy	1 2 3 4 5
11	Marketing Manager	Matti Karttunen	USA	1 2 3 4 5
12	Sales Consultant	Antonio Moreno	Germany	1 2 3 4 5
13	Marketing Manager	Hanna Moos	Austria	1 2 3 4 5
14	Accounting Manager	Hanna Moos	Brazil	1 2 3 4 5
15	Accounting Manager	Georg Pipps	Brazil	1 2 3 4 5
16	Sales Consultant	Jaime Yorres	Austria	1 2 3 4 5
17	Marketing Manager	Howard Snyder	USA	1 2 3 4 5
18	Sales Associate	Paul Henriot	Germany	1 2 3 4 5
19	Accounting Manager	Jaime Yorres	Argentina	1 2 3 4 5
20	Accounting Manager	Jaime Yorres	Spain	1 2 3 4 5
21	Accountant	Antonio Moreno	England	1 2 3 4 5
22	Marketing Manager	Jaime Yorres	Germany	1 2 3 4 5
23	Marketing Assistant	Howard Snyder	Argentina	1 2 3 4 5
24	Sales Agent	Elizabeth Lincoln	France	1 2 3 4 5
25	Owner	Georg Pipps	France	1 2 3 4 5
26	Sales Representative	Antonio Moreno	France	1 2 3 4 5
27	Sales Consultant	Hanna Moos	Germany	1 2 3 4 5
28	Marketing Assistant	Matti Karttunen	USA	1 2 3 4 5
29	Sales Agent	Howard Snyder	Bulgaria	1 2 3 4 5
30	Sales Consultant	Howard Snyder	USA	1 2 3 4 5
31	Sales Representative	Georg Pipps	Austria	1 2 3 4 5
32	Accounting Manager	Patricio Simpson	Austria	1 2 3 4 5
33	Sales Representative	Hanna Moos	Austria	1 2 3 4 5
34	Sales Associate	Antonio Moreno	Germany	1 2 3 4 5
35	Marketing Assistant	Patricio Simpson	Germany	1 2 3 4 5
36	Sales Manager	Howard Snyder	Bulgaria	1 2 3 4 5
37	Sales Agent	Pascale Cartrain	England	1 2 3 4 5
38	Sales Agent	Hanna Moos	Italy	1 2 3 4 5
39	Sales Representative	Paul Henriot	France	1 2 3 4 5
40	Accounting Manager	Jaime Yorres	Argentina	1 2 3 4 5
41	Sales Agent	Pascale Cartrain	USA	1 2 3 4 5
42	Marketing Assistant	Paul Henriot	Italy	1 2 3 4 5
43	Sales Manager	Howard Snyder	Brazil	1 2 3 4 5
44	Sales Consultant	Pascale Cartrain	Brazil	1 2 3 4 5
45	Sales Representative	Paul Henriot	Bulgaria	1 2 3 4 5
46	Accountant	Matti Karttunen	Brazil	1 2 3 4 5
47	Sales Associate	Howard Snyder	England	1 2 3 4 5
48	Owner	Jaime Yorres	Austria	1 2 3 4 5
49	Owner	Patricio Simpson	Spain	1 2 3 4 5
50	Sales Agent	Patricio Simpson	Brazil	1 2 3 4 5
51	Sales Manager	Hanna Moos	Bulgaria	1 2 3 4 5
52	Sales Associate	Elizabeth Lincoln	Spain	1 2 3 4 5
53	Accounting Manager	Paul Henriot	Germany	1 2 3 4 5
54	Marketing Manager	Paul Henriot	Germany	1 2 3 4 5
55	Sales Associate	Hanna Moos	Bulgaria	1 2 3 4 5
56	Marketing Manager	Paul Henriot	England	1 2 3 4 5
57	Marketing Manager	Paul Henriot	Austria	1 2 3 4 5
58	Sales Manager	Paul Henriot	USA	1 2 3 4 5
59	Sales Agent	Matti Karttunen	Argentina	1 2 3 4 5
60	Accounting Manager	Elizabeth Lincoln	Austria	1 2 3 4 5
61	Accounting Manager	Pascale Cartrain	Argentina	1 2 3 4 5
62	Marketing Manager	Jaime Yorres	Germany	1 2 3 4 5
63	Sales Consultant	Paul Henriot	Austria	1 2 3 4 5
64	Marketing Assistant	Paul Henriot	England	1 2 3 4 5
65	Sales Associate	Howard Snyder	France	1 2 3 4 5
66	Sales Manager	Patricio Simpson	Italy	1 2 3 4 5
67	Marketing Manager	Howard Snyder	Spain	1 2 3 4 5
68	Owner	Patricio Simpson	Austria	1 2 3 4 5
69	Sales Associate	Jaime Yorres	Germany	1 2 3 4 5
70	Accounting Manager	Paul Henriot	Germany	1 2 3 4 5
71	Owner	Paul Henriot	France	1 2 3 4 5
72	Sales Representative	Paul Henriot	France	1 2 3 4 5
73	Accountant	Antonio Moreno	Argentina	1 2 3 4 5
74	Accounting Manager	Jaime Yorres	France	1 2 3 4 5
75	Accountant	Hanna Moos	USA	1 2 3 4 5
76	Sales Associate	Pascale Cartrain	Austria	1 2 3 4 5
77	Sales Consultant	Howard Snyder	Brazil	1 2 3 4 5
78	Accounting Manager	Antonio Moreno	Argentina	1 2 3 4 5
79	Sales Representative	Patricio Simpson	Bulgaria	1 2 3 4 5
80	Sales Consultant	Matti Karttunen	Italy	1 2 3 4 5
81	Sales Agent	Matti Karttunen	Italy	1 2 3 4 5
82	Marketing Assistant	Paul Henriot	Brazil	1 2 3 4 5
83	Accounting Manager	Antonio Moreno	Brazil	1 2 3 4 5
84	Marketing Assistant	Paul Henriot	Brazil	1 2 3 4 5
85	Sales Representative	Elizabeth Lincoln	Austria	1 2 3 4 5
86	Owner	Howard Snyder	Bulgaria	1 2 3 4 5
87	Sales Associate	Antonio Moreno	Brazil	1 2 3 4 5
88	Owner	Pascale Cartrain	Brazil	1 2 3 4 5
89	Marketing Assistant	Hanna Moos	Brazil	1 2 3 4 5
90	Marketing Manager	Jaime Yorres	Bulgaria	1 2 3 4 5
91	Owner	Patricio Simpson	France	1 2 3 4 5
92	Sales Associate	Matti Karttunen	Brazil	1 2 3 4 5
93	Owner	Howard Snyder	Argentina	1 2 3 4 5
94	Accountant	Elizabeth Lincoln	Germany	1 2 3 4 5
95	Sales Consultant	Paul Henriot	Brazil	1 2 3 4 5
96	Accountant	Howard Snyder	England	1 2 3 4 5
97	Sales Agent	Paul Henriot	Argentina	1 2 3 4 5
98	Marketing Assistant	Hanna Moos	Argentina	1 2 3 4 5
99	Owner	Howard Snyder	Germany	1 2 3 4 5
100	Sales Representative	Antonio Moreno	France	1 2 3 4 5


...291 292 293 294 295 296 297 298 299 300 Item 298001 to 299000 of 300000 Page: of 300 GoPage size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="c#" CodeFile="DefaultCS.aspx.cs" Inherits="Telerik.GridExamplesCSharp.Performance.Virtualization.DefaultCS" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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