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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 191001 to 192000 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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