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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 69001 to 70000 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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