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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 249001 to 250000 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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