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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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