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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 228001 to 229000 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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