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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 42001 to 43000 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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