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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 245001 to 246000 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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