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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 180001 to 181000 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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