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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 258001 to 259000 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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