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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 256001 to 257000 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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