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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 106001 to 107000 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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