STRING：如何从此输入字符串获取字符串输出？

Question

How do you get the message from the following inputs

Input is formated by field name separated by comma, followed by a colon, space and then the error message.

<FieldName1>, <FieldName2>, <FieldName3>: <ErrorMessage>"     

Input Example

"ConsumerSecret, ConsumerKey: Invalid application credentials" 
"Password: Invalid Must contain at least one alpha, one numeric, and one special character"

Method

string Message GetErrorByField (string FieldName, string InputString);

1

ErrorMessage = GetErrorByField("ConsumerSecret", "ConsumerSecret, ConsumerKey: Invalid application credentials");

ErrorMessage should now equal

"Invalid application credentials".

2

ErrorMessage = GetErrorByField("ConsumerKey", "ConsumerSecret, ConsumerKey: Invalid application credentials");

ErrorMessage should now equal

"Invalid application credentials".

3

ErrorMessage = GetErrorByField("Password", "Password: Invalid Must contain at least one alpha, one numeric, and one special character");

ErrorMessage should now equal

"Invalid Must contain at least one alpha, one numeric, and one special character".

Answer 1

通过以下方法拆分InputString即GetErrorByField()方法中的第二个参数:然后，您将通过考虑索引为1的拆分字符串来获得结果

string Message = InputString.Split(':')[1].Trim();

Answer 2

You can simply use the Split method of the string class, and get the appropriate value:

GetErrorByField(string str)
{
   var splited = str.Split(":".ToCharArray());
   if (splited != null && splited.Length == 2)
      return splited[1].TrimStart().TrimEnd();
   return string.Empty;
}