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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 99001 to 100000 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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