Question

The code below obviously searches a directory for Files that contain the word “FINAL” but what I’m wondering is can I add to its search criteria? I have a Well_Name and Actual_Date strings that I would like to search for in the File names in addition to the “FINAL” word. Thoughts? Thanks in advance.

DirectoryInfo myDir = new DirectoryInfo("C://DWGs");
var files = myDir.GetFiles("FINAL");

//Can I do something like this to add to my search criteria?
var files = myDir.GetFiles("FINAL" + 
                            drow["Well_Name"].ToString() + 
                            drow["Actual_Date"]);

Answer 1

var files = myDir.GetFileInfo()
                 .Where(f => f.FileName.Contains("FINAL") ||
                             f.FileName.Contains(drow["Well_Name"].ToString()) ||
                             f.FileName.Contains(drow["Actual_Date"]));

Since GetFiles() returns an Enumerable Collection of FileInfo you can just check all of the file names for the criteria that you want.

If you want to get really generic on this you could write a function that looks like this

public IEnumerable<FileInfo> addCriteria(IEnumerable<FileInfo> FileList,
                                         List<String> searchCriteria)
{ 
   var newFileList = FileList;
   foreach(String criteria in searchCriteria)
   {
       newFileList = newFileList.Where(f => f.FileName.Contains(criteria).AsQueryable();
   }
   return newFileList.AsEnumerable();
}