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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 63001 to 64000 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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