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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 226001 to 227000 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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