Awk*_*der 17 .net c# reflection
有没有编写递归方法的简单方法,它会为类中的泛型类型提供"用户友好"的名称Type?
例如,对于以下代码,我想要"List <Dictionary <Int >>",而不是以下代码给出的简写或全名:
var list = new List<Dictionary<int, string>>();
var type = list.GetType();
Console.WriteLine(type.Name);
Console.WriteLine(type.FullName);
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Kir*_*oll 31
根据您编辑的问题,您需要以下内容:
public static string GetFriendlyName(this Type type)
{
if (type == typeof(int))
return "int";
else if (type == typeof(short))
return "short";
else if (type == typeof(byte))
return "byte";
else if (type == typeof(bool))
return "bool";
else if (type == typeof(long))
return "long";
else if (type == typeof(float))
return "float";
else if (type == typeof(double))
return "double";
else if (type == typeof(decimal))
return "decimal";
else if (type == typeof(string))
return "string";
else if (type.IsGenericType)
return type.Name.Split('`')[0] + "<" + string.Join(", ", type.GetGenericArguments().Select(x => GetFriendlyName(x)).ToArray()) + ">";
else
return type.Name;
}
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小智 14
您可以通过调用已经为您提供的递归方法来避免编写递归方法:
static string GetTypeName(Type type)
{
var codeDomProvider = CodeDomProvider.CreateProvider("C#");
var typeReferenceExpression = new CodeTypeReferenceExpression(new CodeTypeReference(type));
using (var writer = new StringWriter())
{
codeDomProvider.GenerateCodeFromExpression(typeReferenceExpression, writer, new CodeGeneratorOptions());
return writer.GetStringBuilder().ToString();
}
}
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请注意,这包括类型命名空间,但不包括程序集引用.对于您问题中的类型,结果如下所示:
System.Collections.Generic.List<System.Collections.Generic.Dictionary<int, string>>
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我不清楚这是否符合"类似的东西" List<Dictionary<int, string>>.
当我需要解决方案时,我使用了此代码:
public static string FriendlyName(this Type type)
{
if (type.IsGenericType)
{
var namePrefix = type.Name.Split(new [] {'`'}, StringSplitOptions.RemoveEmptyEntries)[0];
var genericParameters = type.GetGenericArguments().Select(FriendlyName).ToCsv();
return namePrefix + "<" + genericParameters + ">";
}
return type.Name;
}
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和
public static string ToCsv(this IEnumerable<object> collectionToConvert, string separator = ", ")
{
return String.Join(separator, collectionToConvert.Select(o => o.ToString()));
}
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用法示例:
var typeDisplayText = MyDataModel.GetType().FriendlyName();
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...如果您正在创建自动生成的开发人员帮助页面,这也很有用,因为它包含通用参数名称:
public static string DefinitionTitle(this Type type)
{
if (type.IsGenericType)
{
var namePrefix = type.Name.Split(new[] { '`' }, StringSplitOptions.RemoveEmptyEntries)[0];
var genericParameters = type.GetGenericArguments().Select(a => a.Name).ToCsv();
return namePrefix + "<" + genericParameters + ">";
}
return type.Name;
}
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用法示例:
var typeDefinitionText = typeof(Dictionary<,>).DefinitionTitle());
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