Type Summary
public abstract class FieldInfo : MemberInfo
{
// Constructors
protected FieldInfo();
// Properties
public abstract FieldAttributes Attributes { get; }
MS public abstract RuntimeFieldHandle FieldHandle { get; }
public abstract Type FieldType { get; }
MS public bool IsAssembly { get; }
MS public bool IsFamily { get; }
MS public bool IsFamilyAndAssembly { get; }
MS public bool IsFamilyOrAssembly { get; }
MS public bool IsInitOnly { get; }
MS public bool IsLiteral { get; }
MS public bool IsNotSerialized { get; }
MS public bool IsPinvokeImpl { get; }
MS public bool IsPrivate { get; }
MS public bool IsPublic { get; }
MS public bool IsSpecialName { get; }
MS public bool IsStatic { get; }
MS public override MemberTypes MemberType { get; }
// Methods
MS public static FieldInfo GetFieldFromHandle(RuntimeFieldHandle handle);
public abstract object GetValue(object obj);
MS CF public virtual object GetValueDirect(TypedReference obj);
public void SetValue(object obj, object value);
public abstract void SetValue(object obj, object value,
BindingFlags invokeAttr, Binder binder,
CultureInfo culture);
MS CF public virtual void SetValueDirect(TypedReference obj, object value);
}
Example
using System;
using System.Reflection;
/// <summary>
/// This example prints all the fields of a Type in C# syntax.
/// </summary>
public class FieldInfoSample
{
public static void Main()
{
PrintFields (typeof(Int32));
PrintFields(typeof(DayOfWeek));
Console.WriteLine();
Console.WriteLine();
Console.WriteLine("Press Enter to continue");
Console.ReadLine();
}
public static void PrintFields (Type type)
{
Console.WriteLine("Fields for {0}", type);
foreach (FieldInfo field in type.GetFields(BindingFlags.NonPublic |
BindingFlags.Public | BindingFlags.Instance | BindingFlags.Static))
{
//skip any fields that are not public or protected
if (!(field.IsPublic || field.IsFamily || field.IsFamilyOrAssembly))
{
continue;
}
if (field.DeclaringType.IsEnum)
{
if (field.IsStatic)
{
Console.Write(field.Name);
Console.Write(" = ");
Console.Write(Convert.ChangeType(field.GetValue(null),
Enum.GetUnderlyingType(type)));
Console.WriteLine(',');
}
}
else
{
Console.Write(field.IsPublic ? "public " : field.IsFamily ?
"protected " : "protected internal ");
if (field.IsStatic && field.IsLiteral)
{
Console.Write("const ");
}
else
{
if (field.IsStatic)
{
Console.Write("static ");
}
if (field.IsInitOnly)
{
Console.Write("readonly ");
}
}
Console.Write(field.FieldType);
Console.Write(' ');
Console.Write(field.Name);
if (field.IsStatic)
{
Console.Write(" = ");
Console.Write(field.GetValue(null));
}
Console.WriteLine(';');
}
}
}
} //end class
The output is
Fields for System.Int32
public const System.Int32 MaxValue = 2147483647;
public const System.Int32 MinValue = -2147483648;
Fields for System.DayOfWeek
Sunday = 0,
Monday = 1,
Tuesday = 2,
Wednesday = 3,
Thursday = 4,
Friday = 5,
Saturday = 6,
Press Enter to continue
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