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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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