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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 235001 to 236000 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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