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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 122001 to 123000 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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