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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 66001 to 67000 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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