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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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