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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 121001 to 122000 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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