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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 49001 to 50000 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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