[英]The Exception occured :- “The string was not recognized as a valid DateTime. There is an unknown word starting at index 0.”
我想將DateTime數據存儲到List中。我嘗試了下面的代碼，但是拋出了上面的異常。 請提出一些解決方案。
SqlDataReader dr;
con.Open();
dr = cmd.ExecuteReader();
List<DateTime> fdate = new List<DateTime>();
try
{
if (dr.HasRows)
{
while (dr.Read())
{
fdate.Add(Convert.ToDateTime(dr.ToString()));
}
}
}
catch (Exception)
{
throw;
}
自從我使用DataReaders以來已經有一段時間了，但是您是否不必指定列名或索引？ 在您的代碼中，您嘗試將DataReader轉換為DateTime對象。
fdate.Add(Convert.ToDateTime(dr.ToString()));
您需要在DataReader中指定要轉換的列：
fdate.Add(Convert.ToDateTime(dr["column name"].ToString()));
即使這樣，您仍需要在進行轉換之前檢查null。
該字符串未被識別為有效的DateTime。 從索引0開始有一個未知單詞。
[英]The string was not recognized as a valid DateTime. There is an unknown word starting at index 0. label to string
如何解決此錯誤：System.FormatException：'字符串未被識別為有效的DateTime。 從索引0開始有一個未知單詞。
[英]how to solve this error: System.FormatException: 'The string was not recognized as a valid DateTime. There is an unknown word starting at index 0.'
“System.FormatException：‘該字符串未被識別為有效的 DateTime。有一個從索引 0 開始的未知單詞。” 在 C#
[英]"System.FormatException: 'The string was not recognized as a valid DateTime. There is an unknown word starting at index 0." in C#
FormatException：該字符串未被識別為有效的DateTime。 從索引0開始有一個未知單詞
[英]FormatException: The string was not recognized as a valid DateTime. There is an unknown word starting at index 0
該字符串未被識別為有效的DateTime。 從索引26開始有一個未知詞
[英]The string was not recognized as a valid DateTime. There is an unknown word starting at index 26
字符串“未定義”未被識別為有效的日期時間。 有一個從索引“0”開始的未知單詞
[英]The string 'undefined' was not recognized as a valid DateTime. There is an unknown word starting at index '0'
該字符串未被識別為有效的 DateTime。 從索引 0 開始有一個未知單詞
[英]The string was not recognized as a valid DateTime. There is an unknown word starting at index 0
該字符串未被識別為有效的DateTime，從索引25開始有一個未知單詞
[英]The string was not recognized as a valid DateTime, There is an unknown word starting at index 25
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