Asp.net checks whether image files exist in the specified folder in the specified path.

1. /// <Summary>
2. /// Determine whether an image exists
3. /// </Summary>
4. /// <Param name = "folderPath"> specify the folder path </param>
5. /// <Returns> bool </returns>
6. Public BoolJudgeExpensionName (StringFolderPath)
7. {
8. BoolIsTp =False;
10. If(Directory. Exists (folderPath ))
11. {
12. Foreach(StringItemFilePathInDirectory. GetFiles (folderPath ))
13. {
14. FileInfo fi =NewFileInfo (itemFilePath );
16. // Creation time fi. CreationTime;
17. // Obtain the time fi. LastAccessTime for the last access to the current directory
18. // Obtain the time fi. LastWriteTime of the last written file directory
20. If(Fi. extension. equals (". jpg ") | fi. extension. equals (". JPG ") | fi. extension. equals (". jpge ") | fi. extension. equals (". JPEG ") | fi. extension. equals (". gif ") | fi. extension. equals (". GIF "))
21. {
22. IsTp =True;
23. Break;
24. }
26. Else
27. IsTp =False;
28. }
29. }
31. ReturnIsTp;
32. }