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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 208001 to 209000 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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