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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 257001 to 258000 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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