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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 49001 to 50000 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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