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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 55001 to 56000 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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