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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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