我怎样才能得到使用反射泛型类型的正确的文本定义? [英] How can I get the correct text definition of a generic type using reflection?
问题描述
我的工作code代跑与泛型一个障碍。这是什么原因造成了我的问题的简化版本。
词典<字符串,日期>词典=新词典<字符串,日期时间及GT;();
字符串文本= dictionary.GetType()全名。
通过上面的code段文本值
如下:
System.Collections.Generic.Dictionary`2 [System.String,mscorlib程序,版本= 2.0.0.0,
文化=中性公钥= b77a5c561934e089],[System.DateTime的,mscorlib中,
版本= 2.0.0.0,文化=中性公钥= b77a5c561934e089]
(增加了更好的可读性换行。)
有没有办法让不同的格式类型名称(键入
),而不分析上面的字符串?我渴望为正文如下结果
:
System.Collections.Generic.Dictionary< System.String,System.DateTime的>
有没有内置的方式来获得在.Net框架这种重新presentation。也就是说,因为没有办法得到它正确的。有相当数量未在C#风格的语法重新presentable构造。例如其中p>富是IL有效的类型名称,但不能被重新在C#中psented $ P $。
不过,如果你正在寻找一个pretty很好的解决方案,可以实现手很快。下面的解决方案将在大多数情况下工作。它不会处理
- 嵌套类型
- 非法C#名称
- 的其他情形情侣
例如:
公共静态字符串GetFriendlyTypeName(类型类型){
如果(type.IsGenericParameter)
{
返回type.Name;
} 如果(!type.IsGenericType)
{
返回type.FullName;
} VAR建设者=新System.Text.StringBuilder();
变量名称= type.Name;
VAR指数= name.IndexOf(`);
builder.AppendFormat({0} {1},type.Namespace,name.Substring(0,指数));
builder.Append('<');
VAR第一= TRUE;
的foreach(在type.GetGenericArguments VAR ARG())
{
如果(!第一)
{
builder.Append(,);
}
builder.Append(GetFriendlyTypeName(ARG));
第一= FALSE;
}
builder.Append('>');
返回builder.ToString();
}
I am working on code generation and ran into a snag with generics. Here is a "simplified" version of what is causing me issues.
Dictionary<string, DateTime> dictionary = new Dictionary<string, DateTime>();
string text = dictionary.GetType().FullName;
With the above code snippet the value of text
is as follows:
System.Collections.Generic.Dictionary`2[[System.String, mscorlib, Version=2.0.0.0,
Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.DateTime, mscorlib,
Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]
(Line breaks added for better readability.)
Is there a way to get the type name (type
) in a different format without parsing the above string? I desire the following result for text
:
System.Collections.Generic.Dictionary<System.String, System.DateTime>
There is no built-in way to get this representation in the .Net Framework. Namely because there is no way to get it correct. There are a good number of constructs that are not representable in C# style syntax. For instance "<>foo" is a valid type name in IL but cannot be represented in C#.
However, if you're looking for a pretty good solution it can be hand implemented fairly quickly. The below solution will work for most situations. It will not handle
- Nested Types
- Illegal C# Names
- Couple of other scenarios
Example:
public static string GetFriendlyTypeName(Type type) {
if (type.IsGenericParameter)
{
return type.Name;
}
if (!type.IsGenericType)
{
return type.FullName;
}
var builder = new System.Text.StringBuilder();
var name = type.Name;
var index = name.IndexOf("`");
builder.AppendFormat("{0}.{1}", type.Namespace, name.Substring(0, index));
builder.Append('<');
var first = true;
foreach (var arg in type.GetGenericArguments())
{
if (!first)
{
builder.Append(',');
}
builder.Append(GetFriendlyTypeName(arg));
first = false;
}
builder.Append('>');
return builder.ToString();
}
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