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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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