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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 246001 to 247000 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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