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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 113001 to 114000 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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