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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 233001 to 234000 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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