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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 249001 to 250000 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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