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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 145001 to 146000 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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