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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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