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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 120001 to 121000 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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