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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 228001 to 229000 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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