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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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