查询参数化不能用c＃和SQL Server插入值

Question

I have a parameterized query and it was working fine, but when I delete de DB and create it again, with the same values and everything, it throws an exception that says it cannot insert value NULL with the value sexo, but all the values are assigned, here it's the code:

    try{
      var cmdPersona_Log = new SqlCommand();
      cmdPersona_Log.Parameters.Clear();
      cmdPersona_Log.Connection = mySqlConnection;
      cmdPersona_Log.CommandType = CommandType.Text;
      cmdPersona_Log.CommandText = @"INSERT INTO [Tomin].[TominRH].[Persona_Log] "
       + "([Id_Action],[Id_User],[Id_Date],[Id_Entidad],[Nombre],[Paterno],[Materno],[Sexo],[Id_Nacionalidad])"
       + " Values (1, 'Admin', @fecha, @id_entidad, @nombre, @paterno, @materno, @sexo, 52)";
      cmdPersona_Log.Parameters.AddWithValue("@fecha", DateTime.Now);
      cmdPersona_Log.Parameters.AddWithValue("@id_entidad", dbRow["CUENTA"].ToString().Trim());
      cmdPersona_Log.Parameters.AddWithValue("@nombre", nombre ?? string.Empty);
      cmdPersona_Log.Parameters.AddWithValue("@paterno", paterno ?? string.Empty);
      cmdPersona_Log.Parameters.AddWithValue("@materno", materno ?? string.Empty);
      cmdPersona_Log.Parameters.AddWithValue("@sexo", 1);
      cmdPersona_Log.ExecuteNonQuery();
   }
   catch(Exception e) 
   {
      MessageBox.Show(dbRow["CUENTA"] + " Persona_log  " + e.ToString());
   } 

I've checked the DB and it doesn't seem to be the problem, any sugestion??

Answer 1

You may be running into a case where AddWithValue isn't inferring your parameter type of bit properly. Use true / false instead of 1 / 0 :

cmdPersona_Log.Parameters.AddWithValue("@sexo", true);

Answer 2

确保INSERT子句中列出了应该为非null的表的所有字段

Answer 3

您是否尝试过使用此表单cmd.Parameters.Add("@SomeID", SqlDbType.Int, 4).Value =您可以在哪里明确SqlDbType？