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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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