/// <summary>
/// Delete a mimetype
/// </summary>
/// <param name="mimetypeTarget"></param>
public static void Deletemimetype(mimetype mimetypeTarget)
{
try
{
using (var ctx = new PollaExpressDBEntities())
{
//verify if the school exists
mimetype omimetype = GetMimeType(mimetypeTarget.Id);
if (omimetype != null)
{
// if exists then edit
ctx.mimetype.Attach(omimetype);
ctx.mimetype.Remove(omimetype);
ctx.SaveChanges();
}
}
}
catch (DbUpdateException ex)
{
if (ex.InnerException.InnerException.Message.Contains("REFERENCE constraint"))
{
throw new Exception("No se puede eliminar este grado porque existe información asociada a este.");
}
}
catch (Exception ex) { throw ex; }
}
/// <summary>
/// Retrieve mimetype information based in the primary key
/// </summary>
/// <param name="mimetypeTarget"></param>
/// <returns></returns>
public static mimetype GetMimeType(string extension)
{
mimetype omimetype = new mimetype();
try
{
using (var ctx = new PollaExpressDBEntities())
{
ctx.Configuration.ProxyCreationEnabled = false;
omimetype = ctx.mimetype.Where(x => x.extension == extension).FirstOrDefault();
}
}
catch (Exception ex) { throw ex; }
return omimetype;
}
/// <summary>
/// Create or update a mimetype
/// </summary>
/// <param name="mimetypeTarget"></param>
public static void Savemimetype(mimetype mimetypeTarget)
{
try
{
using (var ctx = new PollaExpressDBEntities())
{
//verify if the mimetype exists
mimetype omimetype = GetMimeType(mimetypeTarget.Id);
if (omimetype != null)
{
// if exists then edit
ctx.mimetype.Attach(omimetype);
EntityFrameworkHelper.EnumeratePropertyDifferences(omimetype, mimetypeTarget);
ctx.SaveChanges();
}
else
{
// else create
ctx.mimetype.Add(mimetypeTarget);
ctx.SaveChanges();
}
}
}
catch (DbEntityValidationException e)
{
StringBuilder oError = new StringBuilder();
foreach (var eve in e.EntityValidationErrors)
{
oError.AppendLine(string.Format("Entity of type \"{0}\" in state \"{1}\" has the following validation errors:",
eve.Entry.Entity.GetType().Name, eve.Entry.State));
foreach (var ve in eve.ValidationErrors)
{
oError.AppendLine(string.Format("- Property: \"{0}\", Error: \"{1}\"",
ve.PropertyName, ve.ErrorMessage));
}
}
string msg = oError.ToString();
throw new Exception(msg);
}
catch (Exception ex) { throw ex; }
}
