private static string[] FoundFile;
private static long Ntx;
public static string[] SearchFileInPath(string thePath, string theFileName, bool mStop = false)//--------------这里 mStop As Boolean = False 报错
    {
        if (Strings.Right(thePath, 1) != "\\")
            thePath = thePath + "\\";
        GetFileLoop(thePath, theFileName, mStop);
        return FoundFile;
    }

    private static string GetFileLoop(string CurrentPath, string SearFile, bool mStop = false)//-------这里 mStop As Boolean = False 也报错
    {
        string functionReturnValue = null;
        int nI = 0;
        int nDirectory = 0;
        long i = 0;
        string sFileName = null;
        string[] sDirectoryList = null;
        sDirectoryList = new string[-1 + 1];
        
         // ERROR: Not supported in C#: OnErrorStatement

        sFileName = FileSystem.Dir(CurrentPath, Constants.vbHidden | Constants.vbDirectory | Constants.vbReadOnly | Constants.vbSystem);//--------------FileSystem.Dir在c#中是什么函数呢?Constants.也报错
        while (!string.IsNullOrEmpty(sFileName)) {
            if (Strings.UCase(sFileName) // ERROR: Unknown binary operator Like//------------这里问题大了,要怎么改呢
) {
                i = FileSystem.GetAttr(CurrentPath + sFileName);
                if ((i & Constants.vbDirectory) == 0) {
                    if (mStop == false) {
                        Array.Resize(ref FoundFile, Ntx + 1);
                        FoundFile[Ntx] = CurrentPath + sFileName;
                        Ntx = Ntx + 1;
                    //Application.DoEvents()
                    //Sleep(5)
                    } else {
                        functionReturnValue = CurrentPath + sFileName;
                        return functionReturnValue;
                    }
                }
            }
            if (sFileName != "." & sFileName != "..") {

                if (FileSystem.GetAttr(CurrentPath + sFileName) & Constants.vbDirectory) {
                    nDirectory = nDirectory + 1;
                    Array.Resize(ref sDirectoryList, nDirectory + 1);//--------错误    283    与“System.Array.Resize<string>(ref string[], int)”最匹配的重载方法具有一些无效参数,要怎么改呢?
                    sDirectoryList[nDirectory] = CurrentPath + sFileName;
                }
            }
            sFileName = FileSystem.Dir();
        }
        for (nI = 1; nI <= nDirectory; nI++) {
            functionReturnValue = GetFileLoop(sDirectoryList[nI] + "\\", SearFile);
            if (!string.IsNullOrEmpty(functionReturnValue) & mStop == true)
                break; // TODO: might not be correct. Was : Exit For//这里应该是exit for吧?
        }
        return functionReturnValue;
    }

 Private FoundFile() As String '存放传回值的字串阵列
 Private Ntx As Long
    Public Function SearchFileInPath(ByVal thePath As String, ByVal theFileName As String, Optional ByVal mStop As Boolean = False) As String()//-------这里 mStop As Boolean = False 也报错
        If Strings.Right(thePath, 1) <> "\" Then thePath = thePath & "\"
        Call GetFileLoop(thePath, theFileName, mStop)
        SearchFileInPath = FoundFile
    End Function

    Private Function GetFileLoop(ByVal CurrentPath As String, ByVal SearFile As String, Optional ByVal mStop As Boolean = False) As String//-------这里 mStop As Boolean = False 也报错
        Dim nI As Integer, nDirectory As Integer, i As Long
        Dim sFileName As String
        Dim sDirectoryList() As String
        ReDim sDirectoryList(-1)
        ' Ntx = 0
        On Error Resume Next
        sF