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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 139001 to 140000 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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