Converter from Text to morse [help needed]

hi guys i have one problem,I want to make an application for windows that encodes a text into morse....
i use an EditBox to enter the the word,and then a Button to send a each letter to a StringGrid Cell.
After that,through a loop I check the letter in every cell independently
and turn it into a morse character (example where "a" put ".---")
and the send it to a stringgrid_morse

When i compile it, it doesn't give me any error.
But when i run it,I get an error,and Dstring.h pops up
in a line saying "ThrowIfOutOfRange(idx); // Should Range-checking be optional to avoid overhead ??"

I need help I have been working on it 2 weeks (yeah I'm a noob xD)




Unit1.cpp

Code:

---

//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------


void __fastcall TForm1::Encode_ButtonClick(TObject *Sender)
{



  for(int i=0;i<=Edit_Text->Text.Length();i++)
        {
          StringGrid_Text->ColCount=Edit_Text->Text.Length();
          StringGrid_Text->Cells[i][0]=Edit_Text->Text[i];

          if(StringGrid_Text->Cells[i][0]=="a"|StringGrid_Text->Cells[i][0]=="A")
            {
              StringGrid_Morse->Cells[i][0]=".-";

            }
          else if (StringGrid_Text->Cells[i][0]=="b"|StringGrid_Text->Cells[i][0]=="B")

                StringGrid_Morse->Cells[i][0]=".--";



        }
}
//---------------------------------------------------------------------------
void __fastcall TForm1::StringGrid_MorseClick(TObject *Sender)
{

}
//---------------------------------------------------------------------------

---

> StringGrid_Text->Cells[i][0]=Edit_Text->Text[i];
Well you need to post your declaration of Cells, or otherwise convince us that it has been properly allocated with the correct size.

> if(StringGrid_Text->Cells[i][0]=="a"|StringGrid_Text->Cells[i][0]=="A")
Read up on the difference between | (bitwise) and || (logical)

Quote:

---

> StringGrid_Text->Cells[i][0]=Edit_Text->Text[i];
Well you need to post your declaration of Cells, or otherwise convince us that it has been properly allocated with the correct size.

---

The "declaration" of cells is made in line above....

Where?

These are all 'use' of Cells, not a declaration.

Code:

---

//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------


void __fastcall TForm1::Encode_ButtonClick(TObject *Sender)
{



  for(int i=0;i<=Edit_Text->Text.Length();i++)
        {
          StringGrid_Text->ColCount=Edit_Text->Text.Length();
          StringGrid_Text->Cells[i][0]=Edit_Text->Text[i];

          if(StringGrid_Text->Cells[i][0]=="a"|StringGrid_Text->Cells[i][0]=="A")
            {
              StringGrid_Morse->Cells[i][0]=".-";

            }
          else if (StringGrid_Text->Cells[i][0]=="b"|StringGrid_Text->Cells[i][0]=="B")

                StringGrid_Morse->Cells[i][0]=".--";



        }
}
//---------------------------------------------------------------------------
void __fastcall TForm1::StringGrid_MorseClick(TObject *Sender)
{

}
//---------------------------------------------------------------------------

---

Post your header file, or wherever the struct/class is declared.