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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 227001 to 228000 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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