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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 232001 to 233000 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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