将类字符串设置为空

Question

这是类，字符串是数据库列，当我要调出列时如何将其设置为空？是字符串strDockey = string.Empty; ??

  public class SL_CS
        {
            public string strDocKey { get; set; }
            public string strDocNo { get; set; }
            public string strDOCDATE { get; set; }
            public string strPOSTDATE { get; set; }
            public string strTAXDATE { get; set;}
}

Answer 1

在类的构造函数中初始化属性：

public class SL_CS{

    // constructor gets called when you new this class
    public SL_CS{ 
        // set any properties as you would do normally 
        sl_cs.strDocKey = String.Empty; 
    }

    public string strDocKey { get; set; }
    public string strDocNo { get; set; }
    public string strDOCDATE { get; set; }
    public string strPOSTDATE { get; set; }
    public string strTAXDATE { get; set;}
}

现在上课时：

var inst = new SL_CS();

，然后检查inst.strDocKey，它将为String.Empty。您的其他属性将为空。