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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 149001 to 150000 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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