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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 66001 to 67000 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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