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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 63001 to 64000 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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