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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 254001 to 255000 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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