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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 119001 to 120000 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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