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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 133001 to 134000 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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