procedure TForm1.GetAllFiles(MainPath: String);
var
nI: Integer;
SearchRec: TSearchRec;
sFileName: String;
sMainpath: String;
begin if MainPath[Length(MainPath)]='\' then sMainpath:=MainPath
else sMainpath:=MainPath+'\';
FindFirst(sMainPath+'*.*',faAnyFile,SearchRec);
if SearchRec.Name<>'' then
begin
sFileName:=UpperCase(SearchRec.Name);
AllFiles.Add(sMainPath+SearchRec.Name);
if (SearchRec.Attr and faDirectory)=1 then
if (SearchRec.Name<>'.') and (SearchRec.Name<>'..') then
GetAllFiles(sMainPath+SearchRec.Name);
while (FindNext(SearchRec)=0) do
begin
sFileName:=UpperCase(SearchRec.Name);
if (Pos('.*',sFileName)=Length(sFileName)-3) then
listbox1.Add(sMainPath+SearchRec.Name);
if (SearchRec.Attr and faDirectory)=faDirectory then
if (SearchRec.Name<>'.') and (SearchRec.Name<>'..') then
GetAllFiles(sMainPath+SearchRec.Name);
end;
end;
var
nI: Integer;
SearchRec: TSearchRec;
sFileName: String;
sMainpath: String;
begin if MainPath[Length(MainPath)]='\' then sMainpath:=MainPath
else sMainpath:=MainPath+'\';
FindFirst(sMainPath+'*.*',faAnyFile,SearchRec);
if SearchRec.Name<>'' then
begin
sFileName:=UpperCase(SearchRec.Name);
AllFiles.Add(sMainPath+SearchRec.Name);
if (SearchRec.Attr and faDirectory)=1 then
if (SearchRec.Name<>'.') and (SearchRec.Name<>'..') then
GetAllFiles(sMainPath+SearchRec.Name);
while (FindNext(SearchRec)=0) do
begin
sFileName:=UpperCase(SearchRec.Name);
if (Pos('.*',sFileName)=Length(sFileName)-3) then
listbox1.Add(sMainPath+SearchRec.Name);
if (SearchRec.Attr and faDirectory)=faDirectory then
if (SearchRec.Name<>'.') and (SearchRec.Name<>'..') then
GetAllFiles(sMainPath+SearchRec.Name);
end;
end;
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procedure TForm1.GetAllFiles(MainPath: String);
var
nI: Integer;
SearchRec: TSearchRec;
sFileName: String;
sMainpath: String;
begin if MainPath[Length(MainPath)]='\' then sMainpath:=MainPath
else sMainpath:=MainPath+'\';
FindFirst(sMainPath+'*.*',faAnyFile,SearchRec);
if SearchRec.Name<>'' then
begin
sFileName:=UpperCase(SearchRec.Name);
AllFiles.Add(sMainPath+SearchRec.Name);
if (SearchRec.Attr and faDirectory)=1 then
if (SearchRec.Name<>'.') and (SearchRec.Name<>'..') then
GetAllFiles(sMainPath+SearchRec.Name);
while (FindNext(SearchRec)=0) do
begin
sFileName:=UpperCase(SearchRec.Name);
listbox1.Add(sMainPath+SearchRec.Name);
if (SearchRec.Attr and faDirectory)=faDirectory then
if (SearchRec.Name<>'.') and (SearchRec.Name<>'..') then
GetAllFiles(sMainPath+SearchRec.Name);
end;
end;
var
nI: Integer;
SearchRec: TSearchRec;
sFileName: String;
sMainpath: String;
begin if MainPath[Length(MainPath)]='\' then sMainpath:=MainPath
else sMainpath:=MainPath+'\';
FindFirst(sMainPath+'*.*',faAnyFile,SearchRec);
if SearchRec.Name<>'' then
begin
sFileName:=UpperCase(SearchRec.Name);
listbox1.Add(sMainPath+SearchRec.Name);
if (SearchRec.Attr and faDirectory)=1 then
if (SearchRec.Name<>'.') and (SearchRec.Name<>'..') then
GetAllFiles(sMainPath+SearchRec.Name);
while (FindNext(SearchRec)=0) do
begin
sFileName:=UpperCase(SearchRec.Name);
listbox1.Add(sMainPath+SearchRec.Name);
if (SearchRec.Attr and faDirectory)=faDirectory then
if (SearchRec.Name<>'.') and (SearchRec.Name<>'..') then
GetAllFiles(sMainPath+SearchRec.Name);
end;
end;
在应用实践中,我们经常会用到文件查询功能。通过Win95中提供的懳募檎覓,我们可以方便的找出磁盘上任何子目录下的文件,其原因是该查找功能可以遍历指定目录下的所有子目录中的文件。从编程角度讲,它实现了子目录级的文件查询。
其实,这项功能并不难实现,关键是能理解并掌握懙莨閽这种程序设计思路。本人用Delphi实现了该项功能(任意子目录级),由于使用了懙莨閽,程序思路清晰,代码量小。
实现方法:
1. 获取当前目录下的所有下一级子目录,2. 存入字符串列表中(Tstrings)。
其中,用到了几个API函数。
FindFirst是找出指定目录下第一个文件或目录。
FindNext一般和FindFirst配合使用,用来找出下一个文件或目录。
FindClose用来关闭查询。
(以上函数Delphi在线帮助中有详尽解释,在此不赘述);
3. 用FileExists函数查找当前目录,4. 寻找是否有满足条件的文件存在。
5. 依次使各个子目录成为当前目录,6. 递归调用本函数。
7. 释放资源,8. 返回查询结果。
代码如下:
1. 从搜索记录中判断是否是子目录。
function IsValidDir(SearchRec:TSearchRec):Boolean;
begin
if (SearchRec.Attr=16) and
(SearchRec.Name<>'.') and
(SearchRec.Name<>'..') then
Result:=True
else
Result:=False;
end;
2. 这是查询主体函数。
参数介绍:
Mainpath: 指定的查询目录。
Filename: 欲查询的文件。
Foundresult: 返回的含完整路径的匹配文件(可能有多个)。
如果有匹配文件,函数返回True,否则,返回False;
function SearchFile(mainpath:string;filename:string;
var foundresult:TStrings):Boolean;
var
i:integer;
Found:Boolean;
subdir1:TStrings;
searchRec:TsearchRec;
begin
found:=false;
if Trim(filename)<>'' then
begin
subdir1:=TStringList.Create;//字符串列表必须动态生成
//找出所有下级子目录。
if (FindFirst(mainpath+'*.*'faDirectorySearchRec)=0) then
begin
if IsValidDir(SearchRec) then
subdir1.Add(SearchRec.Name);
while (FindNext(SearchRec) = 0) do
begin
if IsValidDir(SearchRec) then
subdir1.Add(SearchRec.Name);
end;
end;
FindClose(SearchRec);
//查找当前目录。
if FileExists(mainpath+filename) then
begin
found:=true;
foundresult.Add(mainpath+filename);
end;
//这是递归部分,查找各子目录。
for i:=0 to subdir1.Count-1 do
found:=Searchfile(mainpath+subdir1.Strings[i]+
'\'Filenamefoundresult)or found;
//资源释放并返回结果。
subdir1.Free;
end;
result:=found;
end;
总之,只要掌握了思路,用哪种编程语言都可以实现。现在,你可以轻松的给你的系统挂上一个非常使用的功能了。
listbox1.Items.Add~~~
呵呵~~是不是可以分点分数给俺??
procedure GetAllFiles(MainPath: String);
var
nI: Integer;
SearchRec: TSearchRec;
sFileName: String;
sMainpath: String;
begin if MainPath[Length(MainPath)]='\' then sMainpath:=MainPath
else sMainpath:=MainPath+'\';
FindFirst(sMainPath+'*.*',faAnyFile,SearchRec);
if SearchRec.Name<>'' then
begin
sFileName:=UpperCase(SearchRec.Name);
Form1.ListBox1.Items.Add(sMainPath+SearchRec.Name);
if (SearchRec.Attr and faDirectory)=1 then
if (SearchRec.Name<>'.') and (SearchRec.Name<>'..') then
GetAllFiles(sMainPath+SearchRec.Name);
while (FindNext(SearchRec)=0) do
begin
sFileName:=UpperCase(SearchRec.Name);
Form1.listbox1.Items.Add(sMainPath+SearchRec.Name);
if (SearchRec.Attr and faDirectory)=faDirectory then
if (SearchRec.Name<>'.') and (SearchRec.Name<>'..') then
GetAllFiles(sMainPath+SearchRec.Name);
end;
end;
end;procedure TForm1.Button1Click(Sender: TObject);
begin
GetAllFiles('c:\lotus');
end;