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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 226001 to 227000 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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