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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 123001 to 124000 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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