c# - GetMethod 返回 null

Question

好的，所以我有这门课:

public class tUObject
{
    public const string strSelect = "SELECT Id, cName, Major FROM tUObject WHERE Id = ";

    //constructors and stuff...

    public virtual void FillElem(ref List<tUObject> l, DataSet ds)
    {
        //...
    }
}

在 MainWindow() 中，我想使用 GetMethod() 进入 FillElem():

static List<tUObject> obj = new List<tUObject>();
static DataSet objDataSet = new DataSet();
//...
string strClass = objDataSet.Tables[0].Rows[0]["Class"].ToString(); //"tUObject"
Type t = Type.GetType("UniDB_WPF." + strClass);  //tUObject with the assembly name
Type tlist = obj.GetType();                      //list<tUObject>
Type tset = objDataSet.GetType();                //DataSet

//Getting strSelect from tUObject
string strAccessSelect = t.GetField("strSelect").GetRawConstantValue().ToString() + ((int)item.Tag).ToString();
//...
//Getting FillElem from tUObject
MethodInfo mi = t.GetMethod("FillElem", BindingFlags.Public, null, new[] { tlist, tset }, null);

问题是，GetMethod() 返回 null，而 GetField() 工作正常。 tlist 和 tset 不为空，分别返回“List'1”和“DataSet”。那为什么会这样呢？

Answer 1

试试这个:

//Getting FillElem from tUObject
MethodInfo mi = t.GetMethod("FillElem", BindingFlags.Public | BindingFlags.Instance, null, new[] { tlist.MakeByRefType(), tset }, null);