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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 128001 to 129000 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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