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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 223001 to 224000 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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