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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 38001 to 39000 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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