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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 247001 to 248000 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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