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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 94001 to 95000 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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