Var
name:string;
F:TextFile;
Begin
......
Readln(f,Name);
.....
end;
以上代码无法读取数据(文件中有数据,但一行也无法读取)。请大家指点。
name:string;
F:TextFile;
Begin
......
Readln(f,Name);
.....
end;
以上代码无法读取数据(文件中有数据,但一行也无法读取)。请大家指点。
S: string;
begin
if OpenDialog1.Execute then { Display Open dialog box }
begin
AssignFile(F, OpenDialog1.FileName); { File selected in dialog }
Reset(F);
Readln(F, S); { Read first line of file }
Edit1.Text := S; { Put string in a TEdit control }
CloseFile(F);
end;
end;二进制文件
var FromF, ToF: file;
NumRead, NumWritten: Integer;
Buf: array[1..2048] of Char;
begin
if OpenDialog1.Execute then { Display Open dialog box }
begin
AssignFile(FromF, OpenDialog1.FileName);
Reset(FromF, 1); { Record size = 1 }
if SaveDialog1.Execute then { Display Save dialog box}
begin
AssignFile(ToF, SaveDialog1.FileName); { Open output file } Rewrite(ToF, 1); { Record size = 1 }
Canvas.TextOut(10, 10, 'Copying ' + IntToStr(FileSize(FromF))
+ ' bytes...');
repeat
BlockRead(FromF, Buf, SizeOf(Buf), NumRead);
BlockWrite(ToF, Buf, NumRead, NumWritten);
until (NumRead = 0) or (NumWritten <> NumRead);
CloseFile(FromF);
CloseFile(ToF);
end;
end;
end;
name:string;
F:TextFile;
s:string;
Begin
AssignFile(f,Name)
try
Reset(f);
Readln(f,Name);
Finally
CloseFIle(f);
end;
ReSet(f);
Readln(f,Name,i);
Readln(f,NumberXX);
Readln(f,NumberCFX);
Readln(f,NumberWDX);
Readln(f,NumberZXX);
Readln(f,NumberPJ);
Readln(f,NumberCPK);
Readln(f,NumberPPK);
CloseFile(f);
代码如上,所有的变量均为string类型,文件为文本文件(用记事本打开有内容)。请大家帮忙。