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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 271001 to 272000 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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