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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 275001 to 276000 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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