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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 225001 to 226000 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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