Why the ExecuteNonQuery catch exception {"validation error for column \"ORGTABLE\".\"FIKEYID\", value \"* null *\""}

Question

Why the ExecuteNonQuery catch exception {"validation error for column \"ORGTABLE\".\"FIKEYID\", value \"* null *\""}

string stValuesPlaceHolder = "@p0";
for (int iii = 1; iii < liststFieldValuesNoKeyId.Count; iii++)
    stValuesPlaceHolder += ", @p" + (iii).ToString();

FbTransaction fbTransaction = fbConn.BeginTransaction();
FbCommand fbCmd = new FbCommand("INSERT INTO " + stTableName + "(" + stFieldNamesNoKeyId + ") VALUES ( " + stValuesPlaceHolder + " )", fbConn, fbTransaction);

for (int iii = 0; iii < liststFieldValuesNoKeyId.Count; iii++) {
    string stPlaceHolder = "@p" + (iii).ToString();
    string stValue = liststFieldValuesNoKeyId[iii];
    fbCmd.Parameters.AddWithValue(stPlaceHolder, stValue);
}

fbCmd.ExecuteNonQuery();
fbTransaction.Commit();

The stTableName is OrgTable.

The fields names are:

fstPriority, fstInfo, fstDateCreated, fstDateModified, fiKeyID.

The field definitions are:

fstPriority VARCHAR(30), fstInfo VARCHAR(100), fstDateCreated VARCHAR(30), fstDateModified VARCHAR(30), fiKeyID INTEGER PRIMARY KEY

---

In this section of the code:

stFieldNamesNoKeyId = "fstPriority, fstInfo, fstDateCreated, fstDateModified".

stValuesPlaceHolder = "@p0, @p1, @p2, @p3"

Four fbCmd.Parameters.AddWithValue:

stPlaceHolder = "@p0" ... stValue = "1st value";

stPlaceHolder = "@p1" ... stValue = "2nd value";

stPlaceHolder = "@p2" ... stValue = "3rd value";

stPlaceHolder = "@p3" ... stValue = "4th value";

I did not add a value for fiKeyID as it as the PRIMARY KEY.

Answer 1

Definitions:

public const string stMAIN_TABLE_NAME = " OrgTable ";
public const string stDELETED_TABLE_NAME = "  BackupTable ";

public const string stFIELD_DEFINITIONS = " fstPriority VARCHAR(30)" + 
                                          ", fstInfo VARCHAR(100)" +
                                          ", fstDateCreated VARCHAR(30)" +
                                          ", fstDateModified VARCHAR(30)" +
                                          ", fiKeyID INTEGER GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY ";

public const string stFIELD_NAMES_NO_KEY_ID = " fstPriority" + 
                                              ", fstInfo" + 
                                              ", fstDateCreated" + 
                                              ", fstDateModified ";

public const string stFIELD_NAMES_KEY_ID = " fiKeyID ";

public const string stFIELD_NAMES = stFIELD_NAMES_NO_KEY_ID + ", " + stFIELD_NAMES_KEY_ID;

Code:

//------------------------------
static private bool boCreateDatabaseTables(string stPathFilename, 
                                           string stUserID, 
                                           string stPassword, 
                                           List<string> liststTableNames, 
                                           List<string> liststFieldDefinitions) 
{
  bool boErrorFlag = false;
  int iTablesCount = liststTableNames.Count();
  string stOpenConn = new FbConnectionStringBuilder {
    Database = stPathFilename,
    UserID = stUserID,
    Password = stPassword,
    ServerType = FbServerType.Embedded,
    ClientLibrary = stCLIENT_LIBRARY
    }.ToString();
  using (FbConnection fbConn = new FbConnection(stOpenConn)) {
    try {
      fbConn.Open();

      FbTransaction fbTransaction = fbConn.BeginTransaction();
      for (int ii = 0; ii < iTablesCount; ii++) {
        string stSql = "CREATE TABLE " + liststTableNames[ii] + "( " + liststFieldDefinitions[ii] + ")";
        FbCommand fbCmd = new FbCommand(stSql, fbConn, fbTransaction);
        fbCmd.ExecuteNonQuery();
      }
      fbTransaction.Commit();
    }
    catch (Exception ex) {
      boErrorFlag = true;
      MessageBox.Show("catch ... GlobalsFirebird ... boCreateDatabaseTables ... " + ex.Message);
    }
}
return boErrorFlag;
}//boCreateDatabaseTables
//------------------------------
//------------------------------
static public bool boAddRow(string stPathFilename,
                            string stUserID,
                            string stPassword,
                            string stTableName,
                            string stFieldNamesNoKeyId,
                            string stFieldNamesKeyId,
                            List<string> liststFieldValuesNoKeyId) 
{
  bool boErrorFlag = false;
  string stOpenConn = new FbConnectionStringBuilder {
    Database = stPathFilename,
    UserID = stUserID,
    Password = stPassword,
    ServerType = FbServerType.Embedded,
    ClientLibrary = stCLIENT_LIBRARY
  }.ToString();

  using(FbConnection fbConn = new FbConnection(stOpenConn)) {
    fbConn.Open();
    try {
      string stValuesPlaceHolder = "@p0";
      for (int iii = 1; iii < liststFieldValuesNoKeyId.Count; iii++)
        stValuesPlaceHolder += ", @p" + (iii).ToString();
      FbTransaction fbTransaction = fbConn.BeginTransaction();
      string stCmd = "INSERT INTO " + stTableName + "(" + stFieldNamesNoKeyId + ") VALUES ( " + stValuesPlaceHolder + " ) RETURNING  " + stFieldNamesKeyId;
      FbCommand fbCmd = new FbCommand(stCmd, fbConn, fbTransaction);

      for (int iii = 0; iii < liststFieldValuesNoKeyId.Count; iii++) {
        string stPlaceHolder = "@p" + (iii).ToString();
        string stValue = liststFieldValuesNoKeyId[iii];
        fbCmd.Parameters.AddWithValue(stPlaceHolder, stValue);
      }
      fbCmd.Parameters.Add(new FbParameter() { Direction = System.Data.ParameterDirection.Output });
      fbCmd.ExecuteNonQuery();
      fbTransaction.Commit();
    }
    catch (Exception ex) {
      boErrorFlag = true;
      MessageBox.Show("catch ... GlobalsFirebird ... boAddRow ... " + ex.Message);
    }
  }
  return boErrorFlag;
}//boAddRow
//------------------------------