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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 140001 to 141000 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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