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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 128001 to 129000 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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