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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 5001 to 6000 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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