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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 220001 to 221000 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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