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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 130001 to 131000 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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