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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 278001 to 279000 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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