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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 61001 to 62000 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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