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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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