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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 107001 to 108000 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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