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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 256001 to 257000 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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