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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 186001 to 187000 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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