InsertRecord (C++)

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Description

This statement inserts a record to the MyCustInfo data. Note that Nulls are entered for some of the values, but are not required for missing values at the end of the array argument, i.e. after the Field3 field. InsertRecord behaves differently depending on the indexing of the table.


Code

void __fastcall TForm1::Button1Click(TObject *Sender)
{
  Customers->InsertRecord(ARRAYOFCONST((
	Edit1->Text, Edit2->Text, NULL,
	Edit3->Text)));
}

__fastcall TForm1::TForm1(TComponent* Owner)
  : TForm(Owner)
{
  Customers = new TTable(Form1);
  Customers->Active = false; // The Table component must not be active.
  Customers->DatabaseName = "DBDEMOS";
  Customers->TableType = ttParadox;
  Customers->TableName = "CustInfo";
  if (Customers->Exists)
	MessageDlg("CustInfo table already exists.", mtWarning, TMsgDlgButtons() << mbOK, 0);
  else // Do not overwrite an existing table.
    {
	// describe the fields in the table
	Customers->FieldDefs->Clear();
	TFieldDef *newDef = Customers->FieldDefs->AddFieldDef();
	newDef->Name = "Field1";
	newDef->DataType = ftInteger;
	newDef->Required = true;
	newDef = Customers->FieldDefs->AddFieldDef();
	newDef->Name = "Field2";
	newDef->DataType = ftString;
	newDef->Size = 30;
	newDef = Customers->FieldDefs->AddFieldDef();
	newDef->Name = "Field3";
	newDef->DataType = ftString;
	newDef->Size = 30;
	newDef = Customers->FieldDefs->AddFieldDef();
	newDef->Name = "Field4";
	newDef->DataType = ftString;
	newDef->Size = 30;
	// Next, describe any indexes.
	Customers->IndexDefs->Clear();
	/* The first index has no name because it is a Paradox primary key. */
	Customers->IndexDefs->Add("","Field1", TIndexOptions() <<ixPrimary << ixUnique);
	Customers->IndexDefs->Add("Fld2Index", "Field2", TIndexOptions() << ixCaseInsensitive);
	// Now that you have specified what you want, create the table.
	Customers->CreateTable();
	Customers->Active = True;
	for (int i = 1; i <= 20; i++)
	  Customers->AppendRecord(ARRAYOFCONST((i*111, i*222, i*333, i*444)));
  }
  DS2->DataSet = Customers;
  DBGrid2->DataSource->DataSet = Customers;
  Customers->Active = True;
}

Uses

Personal tools
Assistance