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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 69001 to 70000 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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