FieldInfo.IsAssembly Property
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Gets a value that indicates whether the potential visibility of this field is described by FieldAttributes.Assembly; that is, the field is visible at most to other types in the same assembly, and is not visible to derived types outside the assembly.
Assembly: mscorlib (in mscorlib.dll)
Property Value
Type: System.Booleantrue if the visibility of this field is exactly described by FieldAttributes.Assembly; otherwise, false.
| Exception | Condition |
|---|---|
| MethodAccessException | This member is invoked late-bound through mechanisms such as Type.InvokeMember. |
The actual visibility of a field is limited by the visibility of its type. The IsAssembly property might be true for a field, but if it is a field of a private nested type, the field is not visible outside the containing type.
The visibility of a field is exactly described by FieldAttributes.Assembly if the only visibility modifier is internal (Friend in Visual Basic). This property is false for fields that are protected internal in C# (Protected Friend in Visual Basic, protected public in C++); use the IsFamilyOrAssembly property to identify such fields.
The following example defines fields with varying levels of visibility, and displays the values of their IsAssembly, IsFamily, IsFamilyOrAssembly, and IsFamilyAndAssembly properties.
Note: |
|---|
The Visual Basic and C# languages cannot define fields with FieldAttributes.FamANDAssem visibility. |
To run this example, see Building examples that have static TextBlock controls for Windows Phone 8.
using System; using System.Reflection; public class Example { public int f_public; internal int f_internal; protected int f_protected; protected internal int f_protected_public; public static void Demo(System.Windows.Controls.TextBlock outputBlock) { outputBlock.FontFamily = new System.Windows.Media.FontFamily("Courier New"); outputBlock.Text += String.Format("\n{0,-30}{1,-18}{2}", "", "IsAssembly", "IsFamilyOrAssembly") + "\n"; outputBlock.Text += String.Format("{0,-21}{1,-18}{2,-18}{3}\n", "", "IsPublic", "IsFamily", "IsFamilyAndAssembly") + "\n"; foreach (FieldInfo f in typeof(Example).GetFields( BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public)) { outputBlock.Text += String.Format("{0,-21}{1,-9}{2,-9}{3,-9}{4,-9}{5,-9}", f.Name, f.IsPublic, f.IsAssembly, f.IsFamily, f.IsFamilyOrAssembly, f.IsFamilyAndAssembly ) + "\n"; } } } /* This code example produces output similar to the following: IsAssembly IsFamilyOrAssembly IsPublic IsFamily IsFamilyAndAssembly f_public True False False False False f_internal False True False False False f_protected False False True False False f_protected_public False False False True False */
Note: