A list of files (pictures) can be searched and shown in listbox

ImageHandlingLibrary/Filing.cs

@@ -1,6 +1,8 @@
 using ImageHandlingLibrary.InterFaces;
+using ImageHandlingLibrary.Models;
 using System;
 using System.Collections.Generic;
+using System.Drawing;
 using System.Drawing.Imaging;
 using System.IO;
 using System.Linq;
@@ -41,5 +43,93 @@ namespace ImageHandlingLibrary
             var output = _registring.GetRegistryRootDir();
             return $"Root directory value is {output} OBS Test!!";
         }
+
+        public List<LocalPicture> CreateListBoxDataSource(List<FileInfo> fileInfos, string rootCatalog)
+        {
+
+            var outPut = new List<LocalPicture>();
+
+            foreach (var fi in fileInfos)
+            {
+                var bufPicture = new LocalPicture();
+
+                bufPicture.RootPosition = rootCatalog;
+
+                bufPicture.PictureFileName = fi.Name;
+
+                bufPicture.InitialPath = fi.DirectoryName;
+
+                bufPicture.AktImage = Image.FromFile(bufPicture.PictureFullPath);
+
+                bufPicture.AktImWidth = bufPicture.AktImage.Width;
+                bufPicture.AktImHeight = bufPicture.AktImage.Height;
+
+                bufPicture.CreatedDate = TakenDate(bufPicture.AktImage);
+
+                outPut.Add(bufPicture);
+            }
+
+
+            return FillupDateGaps(outPut);
+        }
+
+        private string TakenDate(Image aktImage)
+        {
+            string sPropDatTaken = "";
+            for (int i = 0; i < aktImage.PropertyIdList.Length; i++)
+            {
+                if (aktImage.PropertyIdList[i] == 306)
+                {
+                    for (int j = 0; j < aktImage.PropertyItems[i].Len; j++)
+                    {
+                        sPropDatTaken += Convert.ToChar(aktImage.PropertyItems[i].Value[j]);
+                    }
+                }
+            }
+            return sPropDatTaken;
+        }
+
+        private List<LocalPicture> FillupDateGaps(List<LocalPicture> inPut)
+        {
+            var picReg = new SortedList<string, LocalPicture>();
+            foreach (var pict in inPut)
+            {
+                picReg.Add(pict.PictureFileName, pict);
+            }
+            var tmpPicture = new LocalPicture();
+            tmpPicture.CreatedDate = "";
+            Stack<string> stack = new Stack<string>();
+            var outPut = new List<LocalPicture>();
+
+            foreach (KeyValuePair<string, LocalPicture> lPic in picReg)
+            {
+                if (lPic.Value.CreatedDate == "")
+                {
+                    if (tmpPicture.CreatedDate != "")
+                    {
+                        lPic.Value.CreatedDate = tmpPicture.CreatedDate;
+                        lPic.Value.CreatedDateChanged = true;
+                        outPut.Add(lPic.Value);
+                    }
+                    else
+                    {
+                        stack.Push(lPic.Key);
+                    }
+                }
+                else
+                {
+                    tmpPicture = lPic.Value;
+                    while (stack.Count > 0)
+                    {
+                        var picRegKey = stack.Pop();
+                        picReg[picRegKey].CreatedDate = tmpPicture.CreatedDate;
+                        picReg[picRegKey].CreatedDateChanged = true;
+                        outPut.Add(picReg[picRegKey]);
+                    }
+                    outPut.Add(lPic.Value);
+                }
+            }
+            return outPut;
+        }
     }
 }