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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 255001 to 256000 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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