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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 139001 to 140000 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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