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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 297001 to 298000 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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