的类型初始值设定项引发异常。

Question

配置文件： <?xml version="1.0" encoding="utf-8" ?> <configuration>   <connectionStrings>     <add name="Strcon" connectionString="Data Sourse=.\SQLEXPRESS;Initial Catalog=Province_City;Integrated Security=True"/> </connectionStrings> </configuration> DAL中sqlhelpe的：  public static readonly string Strcon =            ConfigurationManager.ConnectionStrings["Strcon"].ConnectionString;  public static DataTable ExecuteDataTable(string cmdText,            params SqlParameter[] parameters)        {            using (SqlConnection conn = new SqlConnection(Strcon))            {                conn.Open();                using (SqlCommand cmd = conn.CreateCommand())                {                    cmd.CommandText = cmdText;                                 cmd.Parameters.AddRange(parameters);                    using (SqlDataAdapter adapter = new SqlDataAdapter(cmd))                    {                        DataTable dt = new DataTable();                        adapter.Fill(dt);                        return dt;                    }                }            }        } DAL中类的  class Province_City    {        public static DataTable Getdata()        {            string sql = "select * from Province_City where ParentID=@id";            object i=0;            return sqlhelper.ExecuteDataTable(sql,new SqlParameter("id",i));        }    } 出现的问题是： DAL.sqlhelper”的类型初始值设定项引发异常。 是怎么回事？请教高手

Answer 1

建议看看这篇文章：类型初始值设定项引发异常

从你帖的代码中看不出错误，你断点调试一下，看看是哪里出错的