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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 43001 to 44000 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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