This documentation is archived and is not being maintained.

FieldBuilder.SetValue Method (Object, Object, BindingFlags, Binder, CultureInfo)

Sets the value of the field supported by the given object.

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

public override void SetValue(
	Object obj,
	Object val,
	BindingFlags invokeAttr,
	Binder binder,
	CultureInfo culture


Type: System.Object
The object on which to access the field.
Type: System.Object
The value to assign to the field.
Type: System.Reflection.BindingFlags
A member of IBinder that specifies the type of binding that is desired (for example, IBinder.CreateInstance, IBinder.ExactBinding).
Type: System.Reflection.Binder
A set of properties and enabling for binding, coercion of argument types, and invocation of members using reflection. If binder is null, then IBinder.DefaultBinding is used.
Type: System.Globalization.CultureInfo
The software preferences of a particular culture.


_FieldInfo.SetValue(Object, Object, BindingFlags, Binder, CultureInfo)


This method is not supported.

This method will assign the val parameter to the field reflected by this instance on Object obj. If the field is static, obj will be ignored. For non-static fields, obj should be an instance of a class that inherits or declares the field.

The new value is passed as an Object. For example, if the field's type is Boolean, an instance of Object with the appropriate Boolean value is passed. Before setting the value, SetValue checks to see if the user has access permission.

Access restrictions are ignored for fully-trusted code. Private constructors, methods, fields, and properties can be accessed and invoked using Reflection whenever the code is fully-trusted.


This method is currently not supported. As a workaround, retrieve the FieldInfo by reflecting on the finished type and call SetValue to set the value of the field.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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.