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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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