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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 254001 to 255000 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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