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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 200001 to 201000 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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