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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 225001 to 226000 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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