Question

过去的几个小时中，我一直在尝试纠正这些错误。我不确定为什么我会收到_field的这些声明错误。我尝试在顶部和范围内进行声明，但错误未更改。我也很疲倦地宣布_field为私有。如果您可以举一个示例代码段的示例，那将会很有帮助。我加粗了错误消息发生的位置。

**代码：

public class FileClass
{
    #region '  Declarations  '

    private string TEMP_FILE = "~tmpData.txt";
    private GenericParserAdapter _parser;
    private int _fieldID;
    private int _profileID;
    private string _name = string.Empty;
    private string _dataType = string.Empty;
    private int _length = 0;
    private Boolean _isKey = false;
    private Boolean _inCompare = false;
    private int _startPosition = 0;
    private int _endPosition = 0;
    public  int _field;

    public enum FileType
    {
        CharacterRanges,
        Delimited
    }


    private string _location = string.Empty;
    private FileType _type;
    private DataTable _data;
    private Boolean _firstRowContainsFieldNames = true;

    public class ProfileClass
    {

        public ProfileClass _profile = new ProfileClass();

    }




    public class FieldCollectionClass
    {
        private FieldCollectionClass _ComparisonFileOne = new FieldCollectionClass();
        private FieldCollectionClass _ComparisonFileTwo = new FieldCollectionClass();

    }

    #endregion

private void CreateDefaultFieldNames(DataTable ParsedTable)
{
    // ADD LINE COLUMN HEADER
    ParsedTable.Columns[0].ColumnName = "Line";

    // NAME COLUMN HEADERS
    for (int i = 0; i < this._profile._field.Count; i++)
    {
        FieldCollectionClass field = this._profile._field[i];

        ParsedTable.Columns[i + 1].ColumnName = field._name;

        this._fields.Add(field);
    }
}

private void BuildParser(Boolean IsFixedLengthFile)
{

    _parser.FirstRowHasHeader = this._firstRowContainsFieldNames;

    if (IsFixedLengthFile)
    {   
        _parser.FixedWidth = true;

        int[] columnWidths = new int[this._profile._field.Count];
        int index = 0;

        // BUILD COLUMN WIDTHS
        foreach (FieldClass field in this._profile._field)
        {
            columnWidths[index] = _field.Length;
            index++;
        }
        _parser.ColumnWidths = columnWidths;
    }
    else
    {
        _parser.SetColumnDelimiter(',');
    }
}

#endregion

错误：

“ FileName”不包含“ _field”的定义，也没有扩展方法“ _field”接受类型的第一个参数。

Answer 1

您知道此代码吗？

public class ProfileClass
{

   public ProfileClass _profile = new ProfileClass();

}

您认为它将产生多少个实例？

'FileName'不包含'_field'的定义，也没有扩展方法'_field'接受类型的第一个参数

1 个答案: