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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 242001 to 243000 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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