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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 211001 to 212000 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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