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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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