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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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