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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 274001 to 275000 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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