C#动态创建Type数组 [英] Dynamically create an array of Type in C#

问题描述

在 C# 中，我需要能够基于以逗号分隔的数据类型列表在运行时创建一个 Type 对象数组，该列表以字符串形式传递给函数.基本上，这就是我想要完成的:

In C#, I need to be able to create an array of Type objects at run-time based on a comma-delimited list of data types passed in to a function as a string. Basically, here is what I am trying to accomplish:

// create array of types
Type[] paramTypes = { typeof(uint), typeof(string), typeof(string), typeof(uint) };

但我需要能够像这样调用我的函数:

But I need to be able to call my function like this:

MyFunction("uint, string, string, uint");

并让它根据传入的字符串动态生成数组.这是我的第一次尝试:

and have it generate the array dynamically based on the string passed in. Here was my first attempt:

void MyFunction(string dataTypes)
{
    //out or in parameters of your function.   
    char[] charSeparators = new char[] {',', ' '};
    string[] types = dataTypes.Split(charSeparators,
                        stringSplitOptions.RemoveEmptyEntries);

    // create a list of data types for each argument
    List<Type> listTypes = new List<Type>();
    foreach (string t in types)
    {
        listTypes.Add(Type.GetType(t)); 
    }
    // convert the list to an array
    Type [] paramTypes = listTypes.ToArray<Type>();

}

这段代码只是创建了一个 System.Type 类型的空对象数组.我很确定问题出在这里:

This code simply creates an array of null objects of type System.Type. I'm pretty sure the problem lies here:

listTypes.Add(Type.GetType(t));

关于为什么这种语法不起作用的建议?

Suggestions on why this syntax does not do the trick?

推荐答案

问题是 .NET 中没有 uint 和 string 类型.这些是实际 System.UInt32 和 System.String 类型.所以你应该像这样调用你的函数:

The problem is that there are no uint and string types in .NET. Those are C# type aliases to the actual System.UInt32 and System.String types. So you should call your function like this:

MyFunction("System.UInt32, System.String, System.String, System.UInt32");

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