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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 271001 to 272000 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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