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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 256001 to 257000 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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