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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 62001 to 63000 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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