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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 236001 to 237000 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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