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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 64001 to 65000 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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