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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 131001 to 132000 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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