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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 43001 to 44000 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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