how to compare image file names in our project folder

Question

hi!
in my project i take images folder. i insert images that images are saved in my Images folder. my problem is when i insert same file name images means for example first i insert 1.jpeg and next i insert another image that file name is also 1.jpeg. this time first image is replaced with second 1.jpg. but my aim is first when i insert image it checks whether this filename is exits are not if exits give a message i.e., this filename is already exit. how can i solve this.
i take
If imgThumbnail.ImageUrl = Server.MapPath("~/ProductThumbnails/") Then
Response.Write("This Thumbnail Filename is Already Exits. please Rename The New Thumbnail filename")
End If
please help me. very urgent thank u sir.

Mohankumar S · Answer

Hello ajay Thanks for your valuable answer for me keep in ur answer to web by mohan

Amit Choudhary · Answer

here is the function if (System.IO.File.Exists(Server.MapPath( ~/ProductThumbnails/ +FileName))) Response.Write( This Thumbnail Filename is Already Exits. please Rename The New Thumbnail filename )

Raaj Kumar · Answer

Hi You can write a method which will check the available files and return a bool value. So using this you can verify the availability. A sample snippet is as follows protected bool IsFileExist(string fileName) { DirectoryInfo di=new DirectoryInfo (Server.MapPath( ProductThumbnails )); FileInfo[] files=di.GetFiles(); foreach (FileInfo file in files) { if (file.Name==fileName) { return true; } } return false; } Regards raaj