[英]Using a generic argument in a generic method parameter created by CodeDOM
I am trying to create a generic method through code dome where the generic argument is used in the method parameter, for example: 我试图通过代码圆顶创建一个泛型方法,其中泛型参数用在方法参数中,例如:
String.Join<T>(String, IEnumerable<T>)
I have a bit of code to generate the parameters that looks like this: 我有一些代码来生成如下所示的参数:
foreach (var parameter in method.GetParameters())
{
Type parameterType = parameter.ParameterType;
this.VerifyTypeIsKnown(parameterType, typeSet, parameter.Name, "Parameter");
globalNamespace.Imports.Add(new CodeNamespaceImport(parameterType.Namespace));
var memberParameter = new CodeParameterDeclarationExpression(parameterType, parameter.Name);
memberMethod.Parameters.Add(memberParameter);
}
However this incorrectly generates: 但是这会错误地生成:
string Join<T>(string separator, System.Collections.Generic.IEnumerable<> values)
;
Where the T in IEnumerable is missing. 缺少IEnumerable中的T的地方。
I have tried to add the following in order to force add the generic parameters: 我试图添加以下内容以强制添加通用参数:
foreach (var generic in parameterType.GetGenericArguments())
{
var typeref = new CodeTypeReference(generic, CodeTypeReferenceOptions.GenericTypeParameter);
memberParameter.Type.TypeArguments.Add(typeref);
}
However, this produces a copy of 1', causing the output code to look like this: 但是,这会产生1'的副本,导致输出代码如下所示:
string Join<T>(string separator, System.Collections.Generic.IEnumerable<T>`1 values)
;
Any thoughts on what I might be doing wrong, or how to correctly generate the parameters when using generic arguments? 有关我可能做错了什么的想法,或者在使用泛型参数时如何正确生成参数?
Found a solutions, for next person who gets stock on this: 为下一个获得股票的人找到了解决方案:
foreach (var parameter in method.GetParameters())
{
Type parameterType = parameter.ParameterType;
this.VerifyTypeIsKnown(parameterType, typeSet, parameter.Name, "Parameter");
globalNamespace.Imports.Add(new CodeNamespaceImport(parameterType.Namespace));
var typeArguments = from param in parameterType.GetGenericArguments()
select new CodeTypeReference(param);
var memberParameterType = new CodeTypeReference(parameterType.Name, typeArguments.ToArray<CodeTypeReference>());
var memberParameter = new CodeParameterDeclarationExpression(memberParameterType, parameter.Name);
memberMethod.Parameters.Add(memberParameter);
}
its only one line code.. 它只有一行代码..
foreach (var parameter in method.GetParameters())
{
memberMethod.Parameters.Add(new CodeParameterDeclarationExpression(parameter.ParameterType.Name, parameter.Name));
}
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