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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 181001 to 182000 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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