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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 121001 to 122000 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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