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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 130001 to 131000 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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