26 
namespace Myspace
{
    public class MyClass
    {
    }
} //This class is in another file.

using Myspace;
static void Main(string[] args)
{
    Regex regexViewModelKey = new Regex(RegularExpr.ViewModelKeyPattern);
    string viewModel = regexViewModelKey.Match(match.Value).Value;
    //Now, vieModel is a string, and its value is "MyClass". So, I only know the class name, this is why I ask this question.

    //Now, I'm only allowed to use the string form of this class name to get its type.
    //I have tyied like this, but its no use.
    Type t = Type.GetType(viewModel);
    //it's return a null.

    //Then I tyied another method like this, but there is an exception when calling Assembly.Load
    Assembly assembly = Assembly.Load("Myspace");
    Type ty = assembly.GetType("Myspace" + viewModel);
}

我希望我的问题很清楚。谁能帮帮我。THX 我只允许使用这个类名的字符串形式来获取它的类型。

谢谢大家。我已经像这样自己解决了这个问题。

{
      Type t = Type.GetType(string.Concat(viewModel, ",", "Myspace"));
}
4

3 回答 3

51

只需使用函数 typeof()。参数就是那个类名。 

Type type = typeof(FIXProtoClientTest);

MSDN 关于 typeof()

于 2015-10-11T19:43:17.180 回答
3

一般来说，你几乎不需要进行类型比较，除非你用反射或接口做一些事情。尽管如此：

如果您知道要与之比较的类型，请使用isoras运算符：

if( unknownObject is TypeIKnow ) { // run code here

as运算符执行强制转换，如果失败则返回而null不是异常：

TypeIKnow typed = unknownObject as TypeIKnow;

如果您不知道类型并且只需要运行时类型信息，请使用以下.GetType()方法：

Type typeInformation = unknownObject.GetType();



     // int is a value type
    int i = 0;
    // Prints True for any value of i
    Console.WriteLine(i.GetType() == typeof(int));

    // string is a sealed reference type
    string s = "Foo";
    // Prints True for any value of s
    Console.WriteLine(s == null || s.GetType() == typeof(string));

    // object is an unsealed reference type
    object o = new FileInfo("C:\\f.txt");
    // Prints False, but could be true for some values of o
    Console.WriteLine(o == null || o.GetType() == typeof(object));

 // Get the type of a specified class.
                Type myType1 = Type.GetType("System.Int32");
                Console.WriteLine("The full name is {0}.", myType1.FullName);
                // Since NoneSuch does not exist in this assembly, GetType throws a TypeLoadException.
                Type myType2 = Type.GetType("NoneSuch", true);
                Console.WriteLine("The full name is {0}.", myType2.FullName);

    // FileSystemInfo is an abstract type
    FileSystemInfo fsi = new DirectoryInfo("C:\\");
    // Prints False for all non-null values of fsi
    Console.WriteLine(fsi == null || fsi.GetType() == typeof(FileSystemInfo));
于 2013-08-19T06:59:20.507 回答
2

如果您使用完全限定的类名（包括其命名空间），您的行 Type.GetType(model) 将起作用。

此外，如果它与进行调用的代码位于不同的程序集中，则当引用的程序集对象是包含该类型的程序集的实例时，您应该使用 Assembly.GetType(typeName)。

于 2013-08-19T07:28:39.340 回答