Question

我在代码中确保填充当前日期值时遇到错误'string' does not contain a definition for 'ToDateTime'。以下是代码：

public class LegalTransactionRec
{
    public string AccountNumber { get; set; }
    public string CostAmount { get; set; }
    public string SSN { get; set; }
    public int BatchID { get; set; }
    public Attorney Attorney { get; set; }
    public DateTime TransactionDate { get; set; }
    public string Description { get; set; }
    public int TransactionCode { get; set; }
}

它就在这里：

TransactionDate = Form1.CheckDate(xlRange.Cells[i, 2].Value2.ToDateTime())

这是检查以确保填充字段的函数：

public static DateTime CheckDate(DateTime tranDate)
{
    DateTime date;
    if (tranDate == null)
    {
        throw new System.ArgumentException("Value cannot be null", "original");
    }
    else
    {
        date = tranDate;
    }
    return date;
}

编辑：xlRange的代码：

        try
        {

            //workbook = excelApp.Workbooks.Open(txtbxFilename.Text);                      View above comment
            Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets.get_Item(1);
            Microsoft.Office.Interop.Excel.Range xlRange = worksheet.UsedRange;

            int rowCount = xlRange.Rows.Count;
            int colCount = xlRange.Columns.Count;

            for (int i = 1; i <= rowCount; i++)
            {
                for (int j = 1; j <= colCount; j++)
                {
                    lstTran.Add(new LegalTransactionRec()
                    {
                        AccountNumber = Form1.CleanString(xlRange.Cells[i, 1].Value2.ToString()),
                        CostAmount = Form1.TryToParse(Form1.CleanAmount(xlRange.Cells[i, 3].Value2.ToString())),
                        SSN = Form1.CleanString(xlRange.Cells[i, 6].Value2.ToString()),
                        TransactionDate = Form1.CheckDate(xlRange.Cells[i, 2].Value2.ToDateTime()),
                        Description = xlRange.Cells[i, 8].Value2.ToString(),
                        TransactionCode = xlRange.Cells[i, 4].Value2.ToInt() //Work on the CheckNull function later
                    });
                }
            }

        }

非常感谢任何帮助。

Answer 1

好吧，Value2包含一个字符串，简单明了。你想使用这样的东西：

static DateTime ConvertToDateTime(object obj)
{
  if (obj == null)
    throw new ArgumentNullException();

  return (DateTime)obj;
}

然后只需致电

ConvertToDateTime(xlRange.Cells[i, 2].Value);

获取日期时间。

或者，如果Value仍然返回字符串，则可以执行

static DateTime ConvertToDateTime(string str)
{
  if (string.IsNullOrEmpty(str))
    throw new ArgumentNullException();

  return DateTime.Parse(str);
}

您可能必须这样称呼它：

ConvertToDateTime(xlRange.Cells[i, 2].Value as string);

'string'不包含'todatetime'的定义

1 个答案: