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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 43001 to 44000 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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