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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 74001 to 75000 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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