Ms merge

app/TaskFlow/ClassAllgemeineFunktionen.vb

@@ -366,4 +366,55 @@ Public Class ClassAllgemeineFunktionen
             MsgBox(ex.Message, MsgBoxStyle.Critical, "Error saving log file")
         End Try
     End Sub
+    Public Shared Function NotNull(Of T)(value As Object, defaultValue As T) As T
+        If value Is Nothing OrElse Convert.IsDBNull(value) Then
+            Return defaultValue
+        End If
+
+        ' Versuche den Wert in den gewünschten Typ zu konvertieren
+        Try
+            Return CType(value, T)
+        Catch ex As InvalidCastException
+            ' Falls die Konvertierung fehlschlägt, gib den Default zurück
+            Return defaultValue
+        End Try
+    End Function
+    Public Shared Function NotNullNullable(Of T As Structure)(value As Object, defaultValue As Nullable(Of T)) As Nullable(Of T)
+        If value Is Nothing OrElse Convert.IsDBNull(value) Then
+            Return defaultValue
+        End If
+        Try
+            ' Direkte Casts sind robust, wandeln aber DBNull nicht – das ist bereits oben abgefangen.
+            Return DirectCast(value, Nullable(Of T))
+        Catch
+            Try
+                ' Fallback: in T casten und zu Nullable machen
+                Return New Nullable(Of T)(DirectCast(value, T))
+            Catch
+                Return defaultValue
+            End Try
+        End Try
+    End Function
+    Public Shared Function NotNullString(value As Object, defaultValue As Object) As String
+        If value Is Nothing OrElse Convert.IsDBNull(value) Then Return defaultValue
+        Return CStr(value)
+    End Function
+
+    Public Shared Function NotNullDate(value As Object, defaultValue As DateTime) As DateTime?
+        If value Is Nothing OrElse Convert.IsDBNull(value) Then Return defaultValue
+        Return DirectCast(value, DateTime)
+    End Function
+    Public Shared Function NewShortGuid() As String
+        ' Neue GUID erzeugen
+        Dim g As Guid = Guid.NewGuid()
+
+        ' In Base64 umwandeln
+        Dim b64 As String = Convert.ToBase64String(g.ToByteArray())
+
+        ' Unerwünschte Zeichen ersetzen/entfernen
+        b64 = b64.Replace("=", "").Replace("+", "-").Replace("/", "_")
+
+        ' Ergebnis zurückgeben
+        Return b64
+    End Function
 End Class