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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 222001 to 223000 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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