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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 28001 to 29000 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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