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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 36001 to 37000 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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