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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 248001 to 249000 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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