Count images in Folder using ASP.net - asp.net-mvc

Question

I want to count the number of images a folder folder, but it produces this error :
Could not find a part of the path 'c:\Content\slideshow\images\image\'.
All of the images are in a folder in the project. Located a Content/slideshow/images/image
This is my code:
<%
string dir = #"/Content/slideshow/images/image";
string[] files;
int numFiles;
files = System.IO.Directory.GetFiles(dir);
numFiles = files.Length;
Response.Write("num ber of images :" + numFiles);
%>

Answer 1

"Could not find a part of the path
'c:\Content\slideshow\images\image\'"
Means very simply that the folder does not exist. If you want to user a relative path you can do the following.
Server.MapPath("~/{RelativePathHere})
Edit : In response to your comment. You will need to loop through the file and check for file extension of each (Keeping your own count)

Answer 2

Use HttpContext.Current.Server.MapPath to map the virtual path to physical path and then pass it to Directory.GetFiles method

Answer 3

To call Directory.GetFiles() you need to pass the full path to the images directory.
string dirPath = #"~/Content/slideshow/images/image";
string dirFullPath = Server.MapPath(dirPath);
string[] files;
int numFiles;
files = System.IO.Directory.GetFiles(dirFullPath);
numFiles = files.Length;
Response.Write("number of images: " + numFiles);
Server.MapPath returns the entire physical file path associated to the dirPath virtual path.

Answer 4

You need to pass this as a relative path using Server.MapPath
Then I would suggest using DirectoryInfo.GetFiles instead of Directory.GetFiles and filter on the image types that you want, so you don't count non-image files. This will yield a FileInfo[].
<%
string dir = Server.MapPath(#"/Content/slideshow/images/image");
FileInfo[] files;
int numFiles;
files = (new System.IO.DirectoryInfo(dir)).GetFiles("filePattern");
numFiles = files.Length;
Response.Write("num ber of images :" + numFiles);
%>
If you have multiple file types that you want to count the best way to do this is just to remove the pattern then filter the results.
var extensions = new String[] {"jpg", "png", "gif"};
files = (new System.IO.DirectInfo(dir)).GetFiles();
foreach(var extension in extensions)
{
numFiles += files.AsEnumerable.Where(f => f.Extension.Equals(extension));
}

Answer 5

int numberOfFiles ;
string path = "C:/PIC";
numberOfFiles = System.IO.Directory.GetFiles(path).Length;
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