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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 29001 to 30000 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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