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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 34001 to 35000 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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