ImageField::GetValue Method
Retrieves the value of the specified field from the specified control.
Assembly: System.Web (in System.Web.dll)
protected: virtual Object^ GetValue( Control^ controlContainer, String^ fieldName, PropertyDescriptor^% cachedDescriptor )
Parameters
- controlContainer
- Type: System.Web.UI::Control
The Control that contains the field value.
- fieldName
- Type: System::String
The name of the field for which to retrieve the value.
- cachedDescriptor
- Type: System.ComponentModel::PropertyDescriptor%
A PropertyDescriptor, passed by reference, that represents the properties of the field.
| Exception | Condition |
|---|---|
| HttpException | The controlContainer parameter is nullptr. - or - The data item associated with the container control is nullptr. - or - The field specified by the fieldName parameter could not be found. |
The GetValue method is a helper method used by the ImageField object to determine the value of the specified field.
Notes to Inheritors:When extending the ImageField object, you can override this method to provide custom routine to determine a field's value.
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.