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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 126001 to 127000 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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