PropertyInfo.GetValue Method (Object, BindingFlags, Binder, Object[], CultureInfo)
When overridden in a derived class, returns the value of a property having the specified binding, index, and CultureInfo.
Assembly: mscorlib (in mscorlib.dll)
public abstract Object GetValue( Object obj, BindingFlags invokeAttr, Binder binder, Object[] index, CultureInfo culture )
Parameters
- obj
- Type: System.Object
The object whose property value will be returned.
- invokeAttr
- Type: System.Reflection.BindingFlags
The invocation attribute. This must be a bit flag from BindingFlags : InvokeMethod, CreateInstance, Static, GetField, SetField, GetProperty, or SetProperty. A suitable invocation attribute must be specified. If a static member is to be invoked, the Static flag of BindingFlags must be set.
- binder
- Type: System.Reflection.Binder
An object that enables the binding, coercion of argument types, invocation of members, and retrieval of MemberInfo objects via reflection. If binder is null, the default binder is used.
- index
- Type: System.Object[]
Optional index values for indexed properties. This value should be null for non-indexed properties.
- culture
- Type: System.Globalization.CultureInfo
The CultureInfo object that represents the culture for which the resource is to be localized. Note that if the resource is not localized for this culture, the CultureInfo.Parent method will be called successively in search of a match. If this value is null, the CultureInfo is obtained from the CultureInfo.CurrentUICulture property.
Implements
_PropertyInfo.GetValue(Object, BindingFlags, Binder, Object[], CultureInfo)| Exception | Condition |
|---|---|
| ArgumentException |
The index array does not contain the type of arguments needed. -or- The property's get accessor is not found. |
| TargetException |
The object does not match the target type, or a property is an instance property but obj is null. |
| TargetParameterCountException |
The number of parameters in index does not match the number of parameters the indexed property takes. |
| MethodAccessException |
There was an illegal attempt to access a private or protected method inside a class. |
| TargetInvocationException |
An error occurred while retrieving the property value. For example, an index value specified for an indexed property is out of range. The InnerException property indicates the reason for the error. |
To determine whether a property is indexed, use the GetIndexParameters method. If the resulting array has 0 (zero) elements, the property is not indexed.
Because static properties belong to the type, not individual objects, get static properties by passing null as the object argument. For example, use the following code to get the static CurrentCulture property of CultureInfo :
PropertyInfo CurCultProp =
(typeof(CultureInfo)).GetProperty("CurrentCulture");
Console.WriteLine("CurrCult: " +
CurCultProp.GetValue(null,null));
To use the GetValue method, first get the class Type. From the Type, get the PropertyInfo. From the PropertyInfo, use the GetValue method.
Note |
|---|
Starting with the .NET Framework version 2.0 Service Pack 1, this method can be used to access non-public members if the caller has been granted ReflectionPermission with the ReflectionPermissionFlag.RestrictedMemberAccess flag and if the grant set of the non-public members is restricted to the caller’s grant set, or a subset thereof. (See Security Considerations for Reflection.) To use this functionality, your application should target the .NET Framework version 3.5 or later. |
-
ReflectionPermission
for accessing non-public members when the grant set of the non-public members is restricted to the caller's grant set, or a subset thereof. Associated enumeration: ReflectionPermissionFlag.RestrictedMemberAccess
-
ReflectionPermission
for accessing non-public members regardless of their grant set. Associated enumeration: ReflectionPermissionFlag.MemberAccess
-
ReflectionPermission
when invoked late-bound through mechanisms such as Type.InvokeMember. Associated enumeration: ReflectionPermissionFlag.MemberAccess.
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.
Note