好的,我有这个课程:
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()
我希望使用FillElem()
转到GetMethod()
:
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()
完美无缺。 tlist
和tset
不为空并返回&#34;列表&#39; 1&#34;和&#34; DataSet&#34;分别。那么为什么会这样呢?
答案 0 :(得分:2)
试试这个:
//Getting FillElem from tUObject
MethodInfo mi = t.GetMethod("FillElem", BindingFlags.Public | BindingFlags.Instance, null, new[] { tlist.MakeByRefType(), tset }, null);
答案 1 :(得分:2)
Memoizer的答案应该有效。 以下代码返回正确的数据:
public class Test
{
public virtual void Test1(ref List<object> t1, object t2)
{
}
}
和方法请求
var t = new Test();
var mi = t.GetType().GetMethod("Test1", BindingFlags.Instance | BindingFlags.Public, null, new Type[] { typeof(List<object>).MakeByRefType(), typeof(object) }, null);
所以你需要搜索另一个问题。你确定你传递的是正确的类型吗?