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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 223001 to 224000 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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