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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 250001 to 251000 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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