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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 117001 to 118000 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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