Use reflection to invoke an object member method based on the navigation path, or to return an object child, grandchild property, or field member

Object
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<summary>



Invokes the object member method, depending on the navigation path, or returns the child, grandchild property, or field member of the object.



Example:



Get the name of the second column of the table



GetMember (Datatable1.gettype (), "Columns.Item.Name", datatable1,1)



Executes the table's Select method and returns a possible DataRow array



GetMember (Datatable1.gettype (), "select", DataTable1, "customer number = ' C0001 ')



Takes the name of the active form, and static members do not need to pass in obj



GetMember (typeof ("System.Windows.Forms.Form"), "Activeform.name", Null,null)



</summary>



<param name= "Type" > Get this type of descendant member </param>



<param name= "Memberpath" The path description of the descendant members, with dots as delimiters </param>



<param name= "obj" > if the member is a static type, then null</param>



<param name= "args" > parameters, note that this parameter can only be used for Memberpath last member </param>



<returns></returns>



public static Object GetMember (Type type,string memberpath,object obj,object[] args)



{



if (Memberpath==null | | Memberpath.trim () = "")



throw new ArgumentException ("Missing required parameters", "Memberpath");



if (type==null)



throw new ArgumentException ("Missing required parameters", "type");







Type _objecttype=type;



Object _object=obj;







Object[] Paras=null;



String[] Strmember=memberpath.split ('. ');



for (int i=0; i<strmember.length; i++)



{



String Membername=strmember[i];



if (i>=strmember.length-1)



Paras=args;







_object = _objecttype.invokemember (MemberName,



BindingFlags.Public | BindingFlags.NonPublic |



BindingFlags.Instance | bindingflags.static |



Bindingflags.getfield | BindingFlags.GetProperty |



BindingFlags.InvokeMethod | Bindingflags.ignorecase,



Type.defaultbinder, _object, paras);







if (_object!=null)



_objecttype=_object. GetType ();



else if (i<strmember.length-1)



throw new ArgumentNullException (membername);



}



return _object;



}