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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 112001 to 113000 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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