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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 137001 to 138000 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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