Der Wert, den Sie gegen Bedarf filtern der Name, nicht die Datenbank Spaltennamen zu sein.
Sie könnten versuchen, diese:
lCol = objNavigation.Where(Nav.HigherIDColumn.PropertyName,Comparison.Equals, 0).Filter();
Oder hier ist eine etwas ausführlichere Methode, basierend auf benutzerdefinierten Überschreibungen der .Filter() Methode funktioniert für mich. Es schien besser zu arbeiten (für mich zumindest), indem Sie explizit die Wo vorher erstellen:
SubSonic.Where w = new SubSonic.Where();
w.ColumnName = Nav.HigherIDColumn.PropertyName;
w.Comparison = SubSonic.Comparison.NotIn;
w.ParameterValue = new string[] { "validvalue1", "validvalue2" };
lCol = objNavigation.Filter(w, false);
Hier ist die Überschreibungen:
/// <summary>
/// Filters an existing collection based on the set criteria. This is an in-memory filter.
/// All existing wheres are retained.
/// </summary>
/// <returns>NavCollection</returns>
public NavCollection Filter(SubSonic.Where w)
{
return Filter(w, false);
}
/// <summary>
/// Filters an existing collection based on the set criteria. This is an in-memory filter.
/// Existing wheres can be cleared if not needed.
/// </summary>
/// <returns>NavCollection</returns>
public NavCollection Filter(SubSonic.Where w, bool clearWheres)
{
if (clearWheres)
{
this.wheres.Clear();
}
this.wheres.Add(w);
return Filter();
}
/// <summary>
/// Filters an existing collection based on the set criteria. This is an in-memory filter.
/// Thanks to developingchris for this!
/// </summary>
/// <returns>NavCollection</returns>
public NavCollection Filter()
{
for (int i = this.Count - 1; i > -1; i--)
{
Nav o = this[i];
foreach (SubSonic.Where w in this.wheres)
{
bool remove = false;
System.Reflection.PropertyInfo pi = o.GetType().GetProperty(w.ColumnName);
if (pi != null && pi.CanRead)
{
object val = pi.GetValue(o, null);
if (w.ParameterValue is Array)
{
Array paramValues = (Array)w.ParameterValue;
foreach (object arrayVal in paramValues)
{
remove = !Utility.IsMatch(w.Comparison, val, arrayVal);
if (remove)
break;
}
}
else
{
remove = !Utility.IsMatch(w.Comparison, val, w.ParameterValue);
}
}
if (remove)
{
this.Remove(o);
break;
}
}
}
return this;
}
Und SubSonic 2.0 nicht wirklich in/Notin Unterstützung für die IsMatch Funktion, also hier die angepasste Version, die funktioniert (in SubSonic \ Utility.cs):
public static bool IsMatch(SubSonic.Comparison compare, object objA, object objB)
{
if (objA.GetType() != objB.GetType())
return false;
bool isIntegerVal = (typeof(int) == objA.GetType());
bool isDateTimeVal = (typeof(DateTime) == objA.GetType());
switch (compare)
{
case SubSonic.Comparison.In:
case SubSonic.Comparison.Equals:
if (objA.GetType() == typeof(string))
return IsMatch((string)objA, (string)objB);
else
return objA.Equals(objB);
case SubSonic.Comparison.NotIn:
case SubSonic.Comparison.NotEquals:
return !objA.Equals(objB);
case SubSonic.Comparison.Like:
return objA.ToString().Contains(objB.ToString());
case SubSonic.Comparison.NotLike:
return !objA.ToString().Contains(objB.ToString());
case SubSonic.Comparison.GreaterThan:
if (isIntegerVal)
{
return ((int)objA > (int)objB);
}
else if (isDateTimeVal)
{
return ((DateTime)objA > (DateTime)objB);
}
break;
case SubSonic.Comparison.GreaterOrEquals:
if (isIntegerVal)
{
return ((int)objA >= (int)objB);
}
else if (isDateTimeVal)
{
return ((DateTime)objA >= (DateTime)objB);
}
break;
case SubSonic.Comparison.LessThan:
if (isIntegerVal)
{
return ((int)objA < (int)objB);
}
else if (isDateTimeVal)
{
return ((DateTime)objA < (DateTime)objB);
}
break;
case SubSonic.Comparison.LessOrEquals:
if (isIntegerVal)
{
return ((int)objA <= (int)objB);
}
else if (isDateTimeVal)
{
return ((DateTime)objA <= (DateTime)objB);
}
break;
}
return false;
}
Hallo Adam, Während dies wirklich einfach ist die Kunden-Anwendung in 2,0 – Doug