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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 98001 to 99000 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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