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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 132001 to 133000 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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