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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 278001 to 279000 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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