PropertyInfo::GetValue Method (Object^, array<Object^>^)
Returns the property value of a specified object with optional index values for indexed properties.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- obj
-
Type:
System::Object^
The object whose property value will be returned.
- index
-
Type:
array<System::Object^>^
Optional index values for indexed properties. The indexes of indexed properties are zero-based. This value should be null for non-indexed properties.
| 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.
This is a convenience method that provides an implementation for the abstract GetValue method with a BindingFlags parameter of Default, the Binder set to null, and the CultureInfo set to null.
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 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 3.5 or later. |
The following example shows how to get the value of an indexed property. The String::Chars property is the default property (the indexer in C#) of the String class.
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
for accessing non-public members regardless of their grant set. Associated enumeration: ReflectionPermissionFlag::MemberAccess
when invoked late-bound through mechanisms such as Type::InvokeMember. Associated enumeration: ReflectionPermissionFlag::MemberAccess.
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
