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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 237001 to 238000 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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