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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 68001 to 69000 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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