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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 73001 to 74000 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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