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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 233001 to 234000 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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