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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 250001 to 251000 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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