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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 114001 to 115000 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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