c# - Gridview 显示空行

Question

我正在使用 Linq-to-SQL，当我选择要在 gridview 中显示的记录时，我的 gridview 显示空记录。我可以看到该行，但它们是空的

public class showFacReq
{
            public string documentNumber;
            public string fixPaperNumber;
            public string letterDate;
            public string letterNumber;
            public string propertyFactoryCenteralId;
            public string requestId;
            public string year;
}

public List<showFacReq> ShowFactoryRequset()
{
    List<showFacReq> q = (from i in dbconnect.tblFactoryRequests.AsEnumerable()
                          select new showFacReq
                                         {
                                             documentNumber = i.documentNumber,
                                             fixPaperNumber = i.fixPaperNumber,
                                             letterDate =ConvertToPersianToShow(i.letterDate),
                                             letterNumber = i.letterNumber,
                                             propertyFactoryCenteralId = i.propertyFactoryCenteralId,
                                             requestId = i.requestId.ToString(),
                                             year = i.year
                                         }).ToList();
    return q;
}

Answer 1

将类的所有字段都转为属性。仅公开属性。像这样:

public class showFacReq {
  public string documentNumber {get;set;}
  //do the same for others
  //....
}