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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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