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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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