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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 75001 to 76000 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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