Gets or sets the name of the field from the data source that contains the values to bind to the ImageUrl property of each image in an ImageField object.
(in System.Web.dll)
Visual Basic (Declaration)
<TypeConverterAttribute("System.Web.UI.Design.DataSourceViewSchemaConverter, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")> _
Public Overridable Property DataImageUrlField As String
Dim instance As ImageField
Dim value As String
value = instance.DataImageUrlField
instance.DataImageUrlField = value
[TypeConverterAttribute("System.Web.UI.Design.DataSourceViewSchemaConverter, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
public virtual string DataImageUrlField { get; set; }
[TypeConverterAttribute(L"System.Web.UI.Design.DataSourceViewSchemaConverter, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
public:
virtual property String^ DataImageUrlField {
String^ get ();
void set (String^ value);
}
public function get DataImageUrlField () : String
public function set DataImageUrlField (value : String)
Use the DataImageUrlField property to specify the name of the field to bind to the ImageUrl property of each image in an ImageField object. The specified field must contain the URLs for the images to display in the ImageField object. You can optionally format the URL values by setting the DataImageUrlFormatString property.
.gif) Note: |
|---|
When the filed value is nullNothingnullptra null reference (Nothing in Visual Basic), an image cannot be displayed. You can display an alternate image for nullNothingnullptra null reference (Nothing in Visual Basic) field values by setting the NullImageUrl property. Instead of an alternate image, you can display alternate text by setting the NullDisplayText property. |
The following example code demonstrates how to use the DataImageUrlField property to specify the name of the field to bind to the ImageUrl property of each image in an ImageField object.
<%@ Page language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html >
<head runat="server">
<title>ImageField Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>ImageField Example</h3>
<asp:gridview id="EmployeesGrid"
autogeneratecolumns="false"
datasourceid="EmployeeSource"
runat="server">
<columns>
<asp:imagefield dataimageurlfield="LastName"
dataimageurlformatstring="~\Images\{0}.jpg"
alternatetext="Employee Photo"
nulldisplaytext="No image on file."
headertext="Photo"
readonly="true"/>
<asp:boundfield datafield="FirstName"
headertext="First Name"/>
<asp:boundfield datafield="LastName"
headertext="Last Name"/>
</columns>
</asp:gridview>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Northwind sample database. Use an ASP.NET -->
<!-- expression to retrieve the connection string value -->
<!-- from the Web.config file. -->
<asp:sqldatasource id="EmployeeSource"
selectcommand="Select [EmployeeID], [LastName], [FirstName] From [Employees]"
connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
runat="server"/>
</form>
</body>
</html>
<%@ Page language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html >
<head runat="server">
<title>ImageField Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>ImageField Example</h3>
<asp:gridview id="EmployeesGrid"
autogeneratecolumns="false"
datasourceid="EmployeeSource"
runat="server">
<columns>
<asp:imagefield dataimageurlfield="LastName"
dataimageurlformatstring="~\Images\{0}.jpg"
alternatetext="Employee Photo"
nulldisplaytext="No image on file."
headertext="Photo"
readonly="true"/>
<asp:boundfield datafield="FirstName"
headertext="First Name"/>
<asp:boundfield datafield="LastName"
headertext="Last Name"/>
</columns>
</asp:gridview>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Northwind sample database. Use an ASP.NET -->
<!-- expression to retrieve the connection string value -->
<!-- from the Web.config file. -->
<asp:sqldatasource id="EmployeeSource"
selectcommand="Select [EmployeeID], [LastName], [FirstName] From [Employees]"
connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
runat="server"/>
</form>
</body>
</html>
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5, 3.0, 2.0
Reference