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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 65001 to 66000 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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