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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 67001 to 68000 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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