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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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