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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 244001 to 245000 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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