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Applies runtime reflection policy to a constructed generic method. See important info in Remarks.
Syntax
<MethodInstantiation Name="method_name"
Signature="method_signature"
Arguments="method_arguments"
Browse="policy_type"
Dynamic="policy_type" />
Attributes and Elements
The following sections describe attributes, child elements, and parent elements.
Attributes
| Attribute | Attribute type | Description |
|---|---|---|
Name |
General | Required attribute. Specifies the method name. |
Signature |
General | Optional attribute. Specifies named parameters of the method. Multiple named parameters are separated by commas. The Signature attribute is used to differentiate overloaded methods. |
Arguments |
General | Required attribute. Specifies the generic type arguments. If multiple arguments are present, they are separated by commas. |
Browse |
Reflection | Optional attribute. Controls querying for information about or enumerating a method but does not enable any dynamic invocation at run time. |
Dynamic |
Reflection | Optional attribute. Controls runtime access to a constructor or method to enable dynamic programming. This policy ensures that a member can be invoked dynamically at run time. |
Name attribute
| Value | Description |
|---|---|
| method_name | The method name. The type of the method is defined by the parent <Type> or <TypeInstantiation> element. |
Signature attribute
| Value | Description |
|---|---|
| method_signature | Specifies the named parameters of the method. If multiple parameters are present, they are separated by commas. |
Arguments attribute
| Value | Description |
|---|---|
| method_arguments | Specifies the generic type arguments. If multiple arguments are present, they are separated by commas. Each argument must consist of the fully qualified type name. |
All other attributes
| Value | Description |
|---|---|
| policy_setting | The setting to apply to this policy type for the method. Possible values are Auto, Excluded, Included, and Required. For more information, see Runtime Directive Policy Settings. |
Child Elements
None.
Parent Elements
| Element | Description |
|---|---|
| <Type> | Applies reflection policy to a type and all its members. |
| <TypeInstantiation> | Applies reflection policy to a constructed generic type and all its members. |
Remarks
The <MethodInstantiation> element overrides the runtime reflection policy of its corresponding open generic method.
When you encounter a System.Reflection.MissingRuntimeArtifactException exception ('Cannot retrieve a MethodInfo for this delegate because the method it targeted [...] was not enabled for metadata using the Dynamic attribute.'), the message provides a url for you to visit, and that url takes you to the MissingMetadataException troubleshooter. Fill in the details in the I reflect on section, and then use the markup that's generated in the Preview section.
If there are no generic parameters, then leave Comma-separated generic arguments to instantiate the method blank. In that case you can disregard the WARNING: The directive below is not complete yet in the Preview section; and the MethodInstantiation@Arguments attribute will be empty in the Preview, by design. As documented above, the Arguments attribute specifies the generic type arguments, and not method parameters.