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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 255001 to 256000 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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