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buscarclientes.cpp
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buscarclientes.cpp
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//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include "buscarclientes.h"
#include "basedatos.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TFormBuscarClientes *FormBuscarClientes;
static int numerocliente;
//---------------------------------------------------------------------------
__fastcall TFormBuscarClientes::TFormBuscarClientes(TComponent* Owner)
: TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TFormBuscarClientes::FormCreate(TObject *Sender)
{
TableClientes->DatabaseName = BD->TableClientes->DatabaseName;
for (int c = 0; c < DBGrid->Columns->Count; c++)
{
ComboBoxColumna->Items->Add(DBGrid->Columns->Items[c]->Title
->Caption);
}
}
//---------------------------------------------------------------------------
void __fastcall TFormBuscarClientes::FormClose(TObject *Sender,
TCloseAction &Action)
{
DBGrid->DataSource = NULL;
TableClientes->Filtered = false;
TableClientes->Active = false;
}
//---------------------------------------------------------------------------
int TFormBuscarClientes::Mostrar()
{
numerocliente = 0;
ShowModal();
return numerocliente;
}
//---------------------------------------------------------------------------
void __fastcall TFormBuscarClientes::BitBtnBuscarClick(TObject *Sender)
{
if (BusquedaValida())
{
TableClientes->Filtered = true;
DBGrid->DataSource = DataSourceClientes;
if (TableClientes->IsEmpty())
{
MessageBox(Handle, "No se han encontrado "
"coincidencias.", Application->Title.c_str(),
MB_APPLMODAL | MB_OK | MB_ICONINFORMATION);
BitBtnSeleccionar->Enabled = false;
}
else
{
BitBtnSeleccionar->Enabled = true;
}
}
}
//---------------------------------------------------------------------------
void __fastcall TFormBuscarClientes::BitBtnCerrarClick(TObject *Sender)
{
Close();
}
//---------------------------------------------------------------------------
void __fastcall TFormBuscarClientes::FormShow(TObject *Sender)
{
TableClientes->Active = true;
EditTexto->Text = "";
ComboBoxColumna->ItemIndex = 0;
EditTexto->SetFocus();
BitBtnSeleccionar->Enabled = false;
}
//---------------------------------------------------------------------------
bool TFormBuscarClientes::BusquedaValida()
{
AnsiString columna = TableClientes->FieldDefs
->Items[ComboBoxColumna->ItemIndex]
->Name;
if (EditTexto->Text.IsEmpty())
{
MessageBox(Handle, "Debe especificar un valor.",
Application->Title.c_str(), MB_APPLMODAL | MB_OK |
MB_ICONINFORMATION);
return false;
}
if (columna == "NumeroCliente")
{
int numero = EditTexto->Text.ToIntDef(0);
if (numero < 1)
{
MessageBox(Handle, "El valor ingresado no es un "
"número válido.",
Application->Title.c_str(), MB_APPLMODAL |
MB_OK | MB_ICONWARNING);
return false;
}
}
else if (columna == "Fecha")
{
try
{
TDateTime fecha = StrToDate(EditTexto->Text);
EditTexto->Text = DateToStr(fecha);
}
catch (EConvertError &converterror)
{
MessageBox(Handle, "El valor ingresado no es una "
"fecha válida.",
Application->Title.c_str(), MB_APPLMODAL
| MB_OK | MB_ICONWARNING);
return false;
}
}
else if (columna == "Descuento")
{
try
{
double descuento = EditTexto->Text.ToDouble();
if (descuento < 0 || descuento > 100)
{
MessageBox(Handle, "El valor ingresado no es "
"un descuento válido.",
Application->Title.c_str(), MB_APPLMODAL
| MB_OK | MB_ICONWARNING);
return false;
}
}
catch (EConvertError &converterror)
{
MessageBox(Handle,
"El valor ingresado no es un descuento "
"válido.", Application->Title.c_str(),
MB_APPLMODAL | MB_OK | MB_ICONWARNING);
return false;
}
}
else
{
if (EditTexto->Text.Length() < 3)
{
MessageBox(Handle, "El texto debe tener por lo menos 3 "
"letras.", Application->Title.c_str(), MB_APPLMODAL
| MB_OK | MB_ICONINFORMATION);
return false;
}
}
return true;
}
//---------------------------------------------------------------------------
void __fastcall TFormBuscarClientes::BitBtnSeleccionarClick(TObject *Sender)
{
numerocliente = TableClientes->FieldValues["NumeroCliente"];
Close();
}
//---------------------------------------------------------------------------
void __fastcall TFormBuscarClientes::DBGridDblClick(TObject *Sender)
{
if (BitBtnSeleccionar->Enabled == true)
{
BitBtnSeleccionar->Click();
}
}
//---------------------------------------------------------------------------
void __fastcall TFormBuscarClientes::TableClientesFilterRecord(
TDataSet *DataSet, bool &Accept)
{
AnsiString columna;
columna = DataSet->FieldDefs->Items[ComboBoxColumna->ItemIndex]->Name;
if (columna == "NumeroCliente" ||
columna == "Descuento")
{
int campo, numero;
campo = DataSet->FieldByName(columna)->AsInteger;
numero = EditTexto->Text.ToInt();
// Filtro
if (campo == numero)
{
Accept = true;
}
else
{
Accept = false;
}
}
else if (columna == "Fecha")
{
TDateTime campo, fecha;
campo = DataSet->FieldByName(columna)->AsDateTime;
fecha = StrToDate(EditTexto->Text);
// Filtro
if (campo == fecha)
{
Accept = true;
}
else
{
Accept = false;
}
}
else
{
AnsiString campo, texto;
campo = DataSet->FieldByName(columna)->AsString;
campo = campo.UpperCase();
texto = EditTexto->Text.UpperCase();
// Filtro
if (campo.Pos(texto) > 0)
{
Accept = true;
}
else
{
Accept = false;
}
}
}
//---------------------------------------------------------------------------