Fill:SelectCommand.Connection属性尚未初始化
#region 创建DataSet对象
public DataSet getds(string M_str_sqlstr, string M_str_table)
{
SqlConnection sqlcon = this.conn;
SqlDataAdapter sqlda = new SqlDataAdapter(M_str_sqlstr, sqlcon);
DataSet myds = new DataSet();
sqlda.Fill(myds, M_str_table); //属性尚未初始化
return myds;
}
#endregion