validation of input integer number in TEdit box
Check validation of input integer number in TEdit box and format it into two decimal places.
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validation of input integer number in TEdit box
Check validation of input integer number in TEdit box and format it into two decimal places.
In order to check the validation, its better to write procedure. So you can call this procedure for all the Edit components within your project.
procedure CheckInteger(Var EdBox : TEdit);
Var
I, Code : Integer;
Begin
{ Get text from TEdit control }
Val(EdBox.Text, I, Code);
{ Error during conversion to Integer? }
If Code<>0 Then
Begin
I:=0;
MessageDlg('Please check your input details ?', mtError, [mbOk], 0);
EdBox.Text := '0';
{ Get focus back to edit box }
EdBox.SetFocus;
End Else
{ Pass the integer value to edit box }
EdBox.Text := IntToStr(I);
End;
Now you can call above procedure in Edit component OnExit event.
procedure TForm1.Edit1Exit(Sender: TObject);
begin
CheckInteger(Edit1);
end;
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Nuuts :: June 04-2009 :: 04:34 AM
The validation procedure is very often demanding one ...
Thanks
tranzistor :: March 17-2010 :: 07:47 AM
This is an old mehod
use
try
IntValue := strtoint(Edit1.Text);
except
ShowMessage('Please check your input details!');
exit;
end;