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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 238001 to 239000 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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