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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 115001 to 116000 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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