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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 252001 to 253000 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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