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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 60001 to 61000 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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