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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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