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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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