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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 44001 to 45000 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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