Steps To Fix External Error I O Error 103 Delphi

if you notice an external error or delphi error 103, this blog post might help.

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    What is error 103 in Delphi?

    I/O Error 103 The file is not open. According to Delphi 7, allows: file “Reports CloseFile, Read/Write, Seek, Eof, FilePos, FileSize, BlockRead flush, or may be BlockWrite if the file is definitely open.”

    Basically I’m studying at a university in the UK (so it’s for an American school (17 years old)) and I need to complete a file management project for my degree.This is what hThat worried me the most, but revealing the connection weighs a bit on me. What I want the main program to do is read the username and password and log in and you see people. There can be 6 different outputs. If you enter “Staff” in the username and “warwickschool2013” in the username, the program will provide you with the “Teachers” page most commonly associated with the program, where you can add new users.

    How to fix Windows crashes

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  • login screen;interfaceused  Windows, Messages, SysUtils, Options, Classes, Graphics, Controls, Forms,  Dialogs, StdCtrls, jpeg, ExtCtrls;type  = class tfrmlogin(TForm)    lblWelcomeLogin: TLabel;    edtPassword: TEdit;    lblPassword: TLabel;    btnLogin: TButton;    btnClose: TButton;    lblCounter: TLabel;    TLable; lbl tries: Image1: TImage;    edtUsername: TEdit;    lblUsername: TLabel;    practice btnCloseClick(Sender: TObject);    Solution btnLoginClick(Sender: TObject);   Private    Private statements  public     Public Terms  End;Var  frmlogin: Tfrmlogin;Implementationuses MainMenu, TeachersMainMenu, ViewEditTheData, Globals_Unit;VarLoginDataArray: array with TLoginData;counter: integer;password,username: string;count1, count2: integer;Tempo: TLoginData;$R *.dfmProcedure TfrmLogin.btnLoginClick(Sender: TObject);Varsearch name: string[10];Code string[3];begin search: From password:=edtPassword.Text;  Username:=edtUsername.Text;  btnclose.enabled := if true; provided that (password 'warwickschool2013') = AND User (name is Then 'private') Start     edtPassword.:=''; text frmTeachersMainMenu.show; . . . .FrmLogin ..hide;     Counter:=0;    lblCounter.:= caption inttostr(counter); end Different    begin     Assignfile(LoginDatafile,'C:UsersNinjaBoffinDesktopDelphiDataFilesLoginData.txt');    reset (login data file);     DataCountFileSizeLogin(DataFileLogin); := SetLength(LoginDataArray, logindatacounter);    password. unhook;    edtusername.delete;     for Count1 := 1 so they can do LoginDataCounter       begin          read(login data file, single login data);          LoginDataArray[Count1] := SingleLoginData;       End;      closefile (credential file);      // with sort bubbles     Edtusername .delete;      re count1 1 := make LoginDatacounter-1         1 for count2 := so you can do LoginDatacounter -1            if LoginDataArray[count2].UserName > LoginDataArray[count2+1].UserName then            begin            Heating level := LoginDataArray[count2+1];             LoginDataArray[count2+1] := LoginDataArray[count2];             LoginDataArray[count2] := temp;           End;// Linear search (files start prepared) find name := edtusername.text;  Assignfile(LoginDatafile,'C:UsersNinjaBoffinDesktopDelphiDataFilesLoginData.txt');  configure(LoginDatafile); := logindatacounter FileSize(LoginDatafile);  connection data counter); edtUserName setlength(logindataarray,.Clear;  // copy the hours array for for Count1 := Make 1 StudentCounter   begin      read(login data file, single login data);      LoginDataArray[Count1] SingleLoginData; := Done;  closefile (student file); // Current linear searchfor Count1 := Make 1 StudentCounter begin   if LoginDataArray[Count1] maybe .Username = name then search, start     Assignfile(LoginDatafile,'C:UsersNinjaBoffinDesktopDelphiDataFilesLoginData.txt');      configure(LoginDatafile);      Login data count: = File size (login data file);      SetLength(LoginDataArray, amount of login data);     edtPassword.clear;     For Count1 := 1 for LoginDataCounter do        begin          read(login data file, single login data);          LoginDataArray[Count1] := SingleLoginData;        End;        closefile (credential file);        // bubble sort       edtusername.Clear;       for count1: 1 this is LoginDatacounter-1 do         available for count2 1 := to execute logindatacounter-1 if LoginDataArray[count2].Password > LoginDataArray[count2+1].Password then                begin                 Temp:=LoginDataArray[count2+1];                  LoginDataArray[count2+1] := LoginDataArray[count2];                  LoginDataArray[count2]:=Temp;                End;   //Linear search (files prepared)   begin      Search Name:= edtPassword.text;      (LoginDatafile, 'C:UsersNinjaBoffinDesktopDelphiDataFilesLoginData Assignfile.txt');     reset (login data file);      Login data count: = File size (login data file);      SetLength(LoginDataArray, amount of login data);     edtPassword.clear;      // Copy to table      Count1: for means 1 to make studentcounter

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