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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 184001 to 185000 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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