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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 246001 to 247000 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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