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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 92001 to 93000 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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