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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 222001 to 223000 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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