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MethodBuilder.DefineParameter Method

Sets the parameter attributes and the name of a parameter of this method, or of the return value of this method. Returns a ParameterBuilder that can be used to apply custom attributes.

Namespace:  System.Reflection.Emit
Assembly:  mscorlib (in mscorlib.dll)

public ParameterBuilder DefineParameter(
	int position,
	ParameterAttributes attributes,
	string strParamName
)

Parameters

position
Type: System.Int32

The position of the parameter in the parameter list. Parameters are indexed beginning with the number 1 for the first parameter; the number 0 represents the return value of the method.

attributes
Type: System.Reflection.ParameterAttributes

The parameter attributes of the parameter.

strParamName
Type: System.String

The name of the parameter. The name can be the null string.

Return Value

Type: System.Reflection.Emit.ParameterBuilder
Returns a ParameterBuilder object that represents a parameter of this method or the return value of this method.

ExceptionCondition
ArgumentOutOfRangeException

The method has no parameters.

-or-

position is less than zero.

-or-

position is greater than the number of the method's parameters.

InvalidOperationException

The containing type was previously created using CreateType.

-or-

For the current method, the IsGenericMethod property is true, but the IsGenericMethodDefinition property is false.

The ParameterBuilder object returned by this method can be used to set the default value for a parameter or to apply custom attributes.

Parameter numbering begins with 1, so position is 1 for the first parameter. If position is zero, this method affects the return value.

NoteNote:

In the .NET Framework versions 1.0 and 1.1, an exception is thrown if position is zero, so this method cannot be used to modify attributes of the return value in those versions.

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, 1.1, 1.0

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