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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 121001 to 122000 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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