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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 246001 to 247000 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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