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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 50001 to 51000 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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