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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 217001 to 218000 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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