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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 229001 to 230000 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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