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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 255001 to 256000 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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