ImageField::GetValue Method (Control^, String^, PropertyDescriptor^%)
.NET Framework (current version)
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 null. - or - The data item associated with the container control is null. - 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.
.NET Framework
Available since 2.0
Available since 2.0
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