只知道字符串 Int32 有没办法通过反射执行Int32.Parse()?

Answer 1

可以反射不过你得提供类型的全名。

代码如下：

using System.Reflection;

private void button1_Click(object sender, EventArgs e)
{
string typeStr = "System.Int32";//反射的类型
string methodStr = "Parse";//方法
string[] paramStr = new string[] { "12345" };//参数
string[] paramTypeStr = new string[] { "System.String" };//参数类型
string bindingFlagsStr = "Static, Public";//方法的可见性
Type type = Type.GetType(typeStr);
object instance = Activator.CreateInstance(type);
BindingFlags bindingFlags = (BindingFlags)Enum.Parse(typeof(BindingFlags), bindingFlagsStr);
Type[] typeArr = Type.GetTypeArray(paramTypeStr);
object[] paramArr = new object[paramStr.Length];
for (int i = 0; i < paramArr.Length; i++)
{
paramArr[i] = paramStr[i];
}
MethodInfo methodInfo = type.GetMethod(methodStr, bindingFlags, null, typeArr, null);
if (methodInfo != null)
{
object result = methodInfo.Invoke(instance, paramArr);
MessageBox.Show("返回值:" + result.ToString() + " 类型:" + result.GetType().ToString());
}
}