public void UpdateTags()
{
char[] sep = { ',' };
List <PhotoTag> tags = this.PhotoTag;
string[] NewTags = this.Tags.Split(sep);
string FormatedTags = string.Empty;
List <string> TrimmedTags = new List <string>();
List <string> DedupedTags = new List <string>();
//1. Trim all tags
for (int i = 0; i < NewTags.Length; i++)
{
if (NewTags[i].Trim() != string.Empty)
{
TrimmedTags.Add(NewTags[i].Trim());
}
}
//2. dedupe the list
for (int i = 0; i < TrimmedTags.Count; i++)
{
bool Duplicate = false;
for (int j = 0; j < DedupedTags.Count; j++)
{
if (DedupedTags[j] == TrimmedTags[i])
{
Duplicate = true;
}
}
if (!Duplicate)
{
// make sure isnt a blank string
if (FormatedTags != string.Empty)
{
FormatedTags += ",";
}
DedupedTags.Add(TrimmedTags[i]);
FormatedTags += TrimmedTags[i];
}
}
//3. remove all the tags that arent in the new set
for (int i = 0; i < tags.Count; i++)
{
bool Delete = true;
for (int j = 0; j < DedupedTags.Count; j++)
{
if (DedupedTags[j] == tags[i].Tag)
{
Delete = false;
}
}
if (Delete)
{
tags[i].Delete();
}
}
// 4. insert new tags
for (int j = 0; j < DedupedTags.Count; j++)
{
bool Insert = true;
for (int i = 0; i < tags.Count; i++)
{
if (DedupedTags[j] == tags[i].Tag)
{
Insert = false;
}
}
if (Insert)
{
PhotoTag photoTag = new PhotoTag();
photoTag.PhotoID = this.PhotoID;
photoTag.DTCreated = DateTime.Now;
photoTag.Tag = DedupedTags[j];
photoTag.Save();
}
}
this.Tags = FormatedTags;
}
/// <summary>
/// Takes an prepopulated IDataReader and creates an array of PhotoTags
/// </summary>
public static List<PhotoTag> PopulateObject(IDataReader dr)
{
ColumnFieldList list = new ColumnFieldList(dr);
List<PhotoTag> arr = new List<PhotoTag>();
PhotoTag obj;
while (dr.Read())
{
obj = new PhotoTag();
if (list.IsColumnPresent("PhotoTagID")) { obj._photoTagID = (int)dr["PhotoTagID"]; }
if (list.IsColumnPresent("PhotoID")) { obj._photoID = (int)dr["PhotoID"]; }
if (list.IsColumnPresent("TagWordID")) { obj._tagWordID = (int)dr["TagWordID"]; }
if (list.IsColumnPresent("Tag")) { obj._tag = (string)dr["Tag"]; }
if (list.IsColumnPresent("DTCreated")) { obj._dTCreated = (DateTime)dr["DTCreated"]; }
arr.Add(obj);
}
dr.Close();
return arr;
}
public void UpdateTags()
{
char[] sep = {','};
List<PhotoTag> tags = this.PhotoTag;
string[] NewTags = this.Tags.Split(sep);
string FormatedTags = string.Empty;
List<string> TrimmedTags = new List<string>();
List<string> DedupedTags = new List<string>();
//1. Trim all tags
for (int i = 0; i < NewTags.Length; i++)
{
if (NewTags[i].Trim() != string.Empty)
{
TrimmedTags.Add(NewTags[i].Trim());
}
}
//2. dedupe the list
for (int i = 0; i < TrimmedTags.Count; i++)
{
bool Duplicate = false;
for (int j = 0; j < DedupedTags.Count; j++)
{
if (DedupedTags[j] == TrimmedTags[i])
{
Duplicate = true;
}
}
if (!Duplicate)
{
// make sure isnt a blank string
if (FormatedTags != string.Empty)
{
FormatedTags += ",";
}
DedupedTags.Add(TrimmedTags[i]);
FormatedTags += TrimmedTags[i];
}
}
//3. remove all the tags that arent in the new set
for (int i = 0; i < tags.Count; i++)
{
bool Delete = true;
for (int j = 0; j < DedupedTags.Count; j++)
{
if (DedupedTags[j] == tags[i].Tag)
{
Delete = false;
}
}
if (Delete)
{
tags[i].Delete();
}
}
// 4. insert new tags
for (int j = 0; j < DedupedTags.Count; j++)
{
bool Insert = true;
for (int i = 0; i < tags.Count; i++)
{
if (DedupedTags[j] == tags[i].Tag)
{
Insert = false;
}
}
if (Insert)
{
PhotoTag photoTag = new PhotoTag();
photoTag.PhotoID = this.PhotoID;
photoTag.DTCreated = DateTime.Now;
photoTag.Tag = DedupedTags[j];
photoTag.Save();
}
}
this.Tags = FormatedTags;
}
