Fixes:

- Fields not matching
- FieldType being lookedUp wrong
- dictionary-access-violation
- guid saved as string not casting
- InsertQuery built wrong

Database-Attribute_System/Attributes/DbForeignObject.cs

@@ -30,7 +30,7 @@ namespace eu.railduction.netcore.dll.Database_Attribute_System.Attributes
         {
             this.parentField = fi;
             this.classAttribute = classAttribute;
-            this.foreignObjectType = fi.GetType();
+            this.foreignObjectType = fi.FieldType;
 
             // Init foreign-object class
             DbObject foreignClassAttribute = ClassAction.Init(this.foreignObjectType);
@@ -45,7 +45,7 @@ namespace eu.railduction.netcore.dll.Database_Attribute_System.Attributes
                 if(this._foreignKeyName != null)     // If i have a name
                 {
                     // check if name matches
-                    if (foreignKey.parentField.Name.ToLower() == this._foreignKeyName)
+                    if (foreignKey.parentField.Name.ToLower() == this._foreignKeyName.ToLower())
                     {
                         if(foreignKey.parentField.GetType() == primaryKeyType)
                         {

Database-Attribute_System/ClassAction.cs

@@ -60,7 +60,10 @@ namespace eu.railduction.netcore.dll.Database_Attribute_System
                     // If its a match, set the value
                     if (baseAttribute._attributeName.ToLower() == data_keySet.Key.ToLower())
                     {
-                        baseAttribute.parentField.SetValue(classObject, data_keySet.Value);
+                        object value = data_keySet.Value;
+                        if (baseAttribute.parentField.FieldType == typeof(Guid)) value = new Guid((string)value);   // If its a guid, i need to convert
+
+                        baseAttribute.parentField.SetValue(classObject, value);
                         break;
                     }
                 }

Database-Attribute_System/QueryBuilder.cs

@@ -181,14 +181,14 @@ namespace eu.railduction.netcore.dll.Database_Attribute_System
             if (attributes.Count != data.Count) throw new InvalidOperationException("Cannot generate SQL-Query. Attribute-count and data-count not equal.");
 
             string attributesSeperatedByComma = "";
-            object[] attributeData = new object[attributes.Count*2];
+            object[] attributeData = new object[attributes.Count*2 -1];
             int c = 0;
-            for(int i=0; i<attributes.Count*2; i+=2)
+            for(int i=0; i< attributes.Count; i++)
             {
                 attributesSeperatedByComma += attributes[i];
-                attributeData[c] = data[i+1];
+                attributeData[c] = data[i];
 
-                if(c+1 != attributes.Count*2)
+                if(c+1 != attributeData.Length)
                 {
                     attributesSeperatedByComma += ", ";
                     attributeData[c+1] = ",";

Database-Attribute_System/internal/Function.cs

@@ -79,6 +79,7 @@ namespace eu.railduction.netcore.dll.Database_Attribute_System
         {
             // Read dbObject-attribute
             DbObject dbObject = ClassAction.Init(classType);
+            Dictionary<string, object> convertedAttributeNameAndValues = new Dictionary<string, object>();
 
             foreach (KeyValuePair<string, object> attributeNameAndValue in attributeNameAndValues)
             {
@@ -87,9 +88,7 @@ namespace eu.railduction.netcore.dll.Database_Attribute_System
                 {
                     if (attributeNameAndValue.Key.ToLower() == baseAttribute.parentField.Name.ToLower())
                     {
-                        attributeNameAndValues.Remove(attributeNameAndValue.Key);
+                        convertedAttributeNameAndValues.Add(baseAttribute._attributeName, attributeNameAndValue.Value);
-
-                        attributeNameAndValues.Add(baseAttribute._attributeName, attributeNameAndValue.Value);
 
                         nameFound = true;
                         break;