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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 46001 to 47000 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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