How to delete Temporary Internet files.

uses
WinInet;
procedure DeleteIECache;
var
lpEntryInfo: PInternetCacheEntryInfo;
hCacheDir: LongWord;
dwEntrySize: LongWord;
begin
dwEntrySize := 0;
FindFirstUrlCacheEntry(nil, TInternetCacheEntryInfo(nil^), dwEntrySize);
GetMem(lpEntryInfo, dwEntrySize);
if dwEntrySize > 0 then
lpEntryInfo^.dwStructSize := dwEntrySize;
hCacheDir := FindFirstUrlCacheEntry(nil, lpEntryInfo^, dwEntrySize);
if hCacheDir <> 0 then
begin
repeat
DeleteUrlCacheEntry(lpEntryInfo^.lpszSourceUrlName);
FreeMem(lpEntryInfo, dwEntrySize);
dwEntrySize := 0;
FindNextUrlCacheEntry(hCacheDir, TInternetCacheEntryInfo(nil^), dwEntrySize);
GetMem(lpEntryInfo, dwEntrySize);
if dwEntrySize > 0 then
lpEntryInfo^.dwStructSize := dwEntrySize;
until not FindNextUrlCacheEntry(hCacheDir, lpEntryInfo^, dwEntrySize);
end;
FreeMem(lpEntryInfo, dwEntrySize);
FindCloseUrlCache(hCacheDir);
end;

Example:

procedure TForm1.Button1Click(Sender: TObject);
begin
DeleteIECache;
end;