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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 148001 to 149000 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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