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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 242001 to 243000 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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