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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 106001 to 107000 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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