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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 287001 to 288000 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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