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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 25001 to 26000 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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