如何在C＃

Question

我有linq，其中一列中的数据在字符串之间可能有空格或特殊字符，例如我的调查，您的调查。我需要删除它，因此在过滤linq之后应该返回mysurvey和yourssurvey

我想删除空格的列，特殊字符是咨询=咨询。名称

我正在使用C＃.net核心和实体框架

      var query = (from consultation in Context.Consultations
                     join survey in Context.Surveys on consultation.Id equals survey.ConsultationId into surveys
                     select new 
                     {
                         consultationId = consultation.Id,
                         consultation = consultation.Name,
                         surveyId = surveys.FirstOrDefault() == null? null : surveys.Select(x=>x.Id),
                         survey = surveys.FirstOrDefault() == null ? null : surveys.Select(x => x.Name),
                         subject ="survey"

                     });

Answer 1

如果要删除字符串中的空格和特殊字符，请使用如下所示：

consultation = Regex.Replace(consultation.Name, "[^0-9A-Za-z]+", "");

使用名称空间

using System.Text.RegularExpressions;

Answer 2

编写这样的扩展方法

public static string StripSpacesAndSpecialCharacters(this string text)
{
   var specChars = new string[] { "'", ";" }; // add more spec chars here
            var procesesedString = text.Trim();

   foreach (var spec in specChars)
   {
     procesesedString = procesesedString.Replace(spec, string.Empty);
   }
   return procesesedString;
}

然后像

一样在查询中使用它

var query = (from consultation in Context.Consultations
                     join survey in Context.Surveys on consultation.Id equals survey.ConsultationId into surveys
                     select new 
                     {
                         consultationId = consultation.Id,
                         consultation = consultation.Name.StripSpacesAndSpecialCharacters(),
                         surveyId = surveys.FirstOrDefault() == null? null : surveys.Select(x=>x.Id),
                         survey = surveys.FirstOrDefault() == null ? null : surveys.Select(x => x.Name),
                         subject ="survey"

                     });