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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 224001 to 225000 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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