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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 143001 to 144000 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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