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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 94001 to 95000 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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