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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 220001 to 221000 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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