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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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