類，結構或接口成員聲明中的標記'='無效，類，結構或接口成員聲明中的無效標記'（'

Question

我想返回存儲在數據庫中的最后一條記錄，並希望將返回值實例化為ReligionCaste類的成員pID，但我有標題錯誤。

我的數據庫功能是

public int LastEnteredRecord()
    {
        int lastId=0;
        dbConnection = new SqlConnection(connectionString);
        try    //If error in connection opening, throws it.
        {
            dbConnection.Open();
            command.Connection = dbConnection;
            command.CommandType = CommandType.StoredProcedure;
            command.CommandText = "dbo.LastRecordEntered";


            try    //if error in query execution, throws it.
            {
                lastId= Convert.ToInt32 ( command.ExecuteScalar());
               // MessageBox.Show("Record Entered with ID:"+lastId .ToString ());
            }
            catch (SqlException ex)
            {
                MessageBox.Show(ex.Message);

            }
            dbConnection.Close();
            dbConnection.Dispose();
        }
        catch (SqlException ex)
        {
            MessageBox.Show(ex.Message);

        }
        return lastId;
    }  

我想將該返回值分配給代碼所在的類

class ReligionCaste
{
    //public int religion_ID, caste_ID;
    public String religion, sect, caste, subCaste;
    public int pID;

    DatabaseHandler.DBCntrlr dbObj = new DatabaseHandler.DBCntrlr();
    pID = dbObj.LastEnteredRecord();

 }

但它給出了上述錯誤。

Answer 1

在語法無效時，您需要一個構造函數為pId賦值。 例：

class ReligionCaste
{
    public ReligionCaste()
    {
        pID = dbObj.LastEnteredRecord();
    }

    //public int religion_ID, caste_ID;
    public String religion, sect, caste, subCaste;
    public int pID;

    DatabaseHandler.DBCntrlr dbObj = new DatabaseHandler.DBCntrlr();
 }

Answer 2

class ReligionCaste
{
    //public int religion_ID, caste_ID;
    public String religion, sect, caste, subCaste;
    public int pID;
    private DatabaseHandler.DBCntrlr dbObj;

    public ReligionCaste()
    {
        dbObj = new DatabaseHandler.DBCntrlr();
        pID = dbObj.LastEnteredRecord();
    }  
 }