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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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

<%@ 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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