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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 224001 to 225000 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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