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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 37001 to 38000 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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