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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 130001 to 131000 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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