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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 186001 to 187000 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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