c# - 在此上下文中不能使用类型 System.Data.SqlTypes.SqlString

Question

跟随错误是什么意思？

"The type System.Data.SqlTypes.SqlString may not be used in this context. To use System.Data.SqlTypes.SqlString as a parameter, return type, or member of a class or struct, the parameter, return type, or member must be declared as type System.Data.SqlTypes.SqlString (it cannot be object). Objects of type System.Data.SqlTypes.SqlString may not be used in un-typed collections, such as ArrayLists." "

这是我的代码

[Serializable]
public class ReportSource{
 [XmlArray]
 public List<SqlParameter> Parameters { get; set; }
}

请帮忙

谢谢

Answer 1

似乎 SQLParameter 不是 XML 序列化的，或者至少当它的 Value 属性(属于 Object 类型)时它是不可序列化的) 包含一个 SqlString。