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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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