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 Overridable Function GetValue ( controlContainer As Control, fieldName As String, ByRef cachedDescriptor As PropertyDescriptor ) As Object
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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