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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 181001 to 182000 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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