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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 220001 to 221000 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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