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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 139001 to 140000 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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