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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 257001 to 258000 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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