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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 33001 to 34000 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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