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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 41001 to 42000 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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