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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 105001 to 106000 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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