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AppSettingsExpressionBuilder::GetAppSetting Method (String, Type, String)

Returns a value from the <appSettings> section of the Web.config file with the value converted to a target type.

Namespace:  System.Web.Compilation
Assembly:  System.Web (in System.Web.dll)

public:
static Object^ GetAppSetting(
	String^ key, 
	Type^ targetType, 
	String^ propertyName
)

Parameters

key
Type: System::String
The key for a value to be retrieved from the configuration file.
targetType
Type: System::Type
The type of the object that contains the property entry.
propertyName
Type: System::String
The name of the property to which the expression is bound.

Return Value

Type: System::Object
The Object associated with the key in the <appSettings> section of the Web.config file.

ExceptionCondition
InvalidOperationException

The key is not found in Web.config.

- or -

The return value could not be converted.

This method retrieves the appropriate value from the key/value pairs in the <appSettings> section of the Web.config file. The value is retrieved by getting the AppSettings property with the key as the index. The resulting string value is converted to a new type based on the targetType and propertyName parameters.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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