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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 229001 to 230000 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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