///如未特別說明,本人所發表的技術文章都為原創, 任何人引用都請包含本聲明
///作者: csdn網名alias88,郵件:[email protected],qq:63343 ,歡迎加我
/// <summary>
///依導航路徑調用對象成員方法,或返回對象其子、孫屬性或字段成員.
///例子:
///獲得表的第二列的名稱
///getmember(datatable1.gettype(),"columns.item.name",datatable1,1)
///執行表的select方法,并返回可能的datarow數組
///getmember(datatable1.gettype(),"select",datatable1,"客戶編號 = 'c0001')
///取活動表單的名稱,靜態成員不需傳入obj
///getmember(typeof("system.windows.forms.form"),"activeform.name",null,null)
/// </summary>
/// <param name="type">獲得此類型的子孫成員</param>
/// <param name="memberpath">子孫成員的路徑描述,以點作為分隔符</param>
/// <param name="obj">如果成員是靜態類型,則為null</param>
/// <param name="args">參數,注意此參數只能為memberpath最后一個成員使用</param>
/// <returns></returns>
public static object getmember(type type,string memberpath,object obj,object[] args)
{
if (memberpath==null || memberpath.trim ()=="")
throw new argumentexception ("缺少必需的參數","memberpath");
if (type==null )
throw new argumentexception ("缺少必需的參數","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;
}
