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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 134001 to 135000 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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