Latest Contributions by ChristineGo

Dear All, I've written the following code trying to copy the subtypes of a feature class, but got the following error message in the set_Domain method, could anyone help point out what's wrong? Error message: "This database does not support null default values." Program: private bool copySubTypes(IFeatureLayer pFeatureLayer, IFeatureClass fgdbFeatureClass, IWorkspace fgdbWorkspace) { if (pFeatureLayer == null || pFeatureLayer.FeatureClass == null) return true; ISubtypes subtypes = (ISubtypes)pFeatureLayer.FeatureClass; ISubtypes fgdbSubTypes = (ISubtypes)fgdbFeatureClass; IWorkspaceDomains fgdbWSdomain = (IWorkspaceDomains)fgdbWorkspace; if (!subtypes.HasSubtype) return true; fgdbSubTypes.SubtypeFieldName = subtypes.SubtypeFieldName; IEnumSubtype enumsubtype; int subtypeCode; string subtypeName; IFields pFields = pFeatureLayer.FeatureClass.Fields; enumsubtype = subtypes.Subtypes; enumsubtype.Reset(); subtypeName = enumsubtype.Next(out subtypeCode); while (subtypeName != null) { fgdbSubTypes.AddSubtype(subtypeCode, subtypeName); for (int iCnt = 0; iCnt < pFields.FieldCount; iCnt++) { string sFieldName = pFields.get_Field(iCnt).Name; object defVal = subtypes.get_DefaultValue(subtypeCode, sFieldName); if (defVal.ToString().Length > 0) { fgdbSubTypes.set_DefaultValue(subtypeCode, sFieldName, defVal); } IDomain pDomain = subtypes.get_Domain(subtypeCode, sFieldName); if (pDomain != null) { IDomain fgdbDomain = fgdbWSdomain.get_DomainByName(pDomain.Name); if (fgdbDomain == null) { return false; } else { fgdbSubTypes.set_Domain(subtypeCode, sFieldName, fgdbDomain); } } } subtypeName = enumsubtype.Next(out subtypeCode); } return true; } Bila ... View more

Dear All, I've written the following code trying to copy the subtypes of a feature class, but got the following error message in the set_Domain method, could anyone help point out what's wrong? Error message: "This database does not support null default values." Program:     private bool copySubTypes(IFeatureLayer pFeatureLayer, IFeatureClass fgdbFeatureClass, IWorkspace fgdbWorkspace)     {                 if (pFeatureLayer == null || pFeatureLayer.FeatureClass == null) return true;                 ISubtypes subtypes = (ISubtypes)pFeatureLayer.FeatureClass;                 ISubtypes fgdbSubTypes = (ISubtypes)fgdbFeatureClass;                 IWorkspaceDomains fgdbWSdomain = (IWorkspaceDomains)fgdbWorkspace;                 if (!subtypes.HasSubtype) return true;                 fgdbSubTypes.SubtypeFieldName = subtypes.SubtypeFieldName;                 IEnumSubtype enumsubtype;                 int subtypeCode;                 string subtypeName;                 IFields pFields = pFeatureLayer.FeatureClass.Fields;                 enumsubtype = subtypes.Subtypes;                 enumsubtype.Reset();                 subtypeName = enumsubtype.Next(out subtypeCode);                 while (subtypeName != null)                 {                     fgdbSubTypes.AddSubtype(subtypeCode, subtypeName);                     for (int iCnt = 0; iCnt < pFields.FieldCount; iCnt++)                     {                         string sFieldName = pFields.get_Field(iCnt).Name;                         object defVal = subtypes.get_DefaultValue(subtypeCode, sFieldName);                         if (defVal.ToString().Length > 0)                         {                             fgdbSubTypes.set_DefaultValue(subtypeCode, sFieldName, defVal);                         }                         IDomain pDomain = subtypes.get_Domain(subtypeCode, sFieldName);                         if (pDomain != null)                         {                             IDomain fgdbDomain = fgdbWSdomain.get_DomainByName(pDomain.Name);                             if (fgdbDomain == null)                             {                                 return false;                             }                             else                             {                                 fgdbSubTypes.set_Domain(subtypeCode, sFieldName, fgdbDomain);                             }                         }                     }                     subtypeName = enumsubtype.Next(out subtypeCode);                 }             return true;     } Bila ... View more

By using TypeOf, I could tell a symbol is a Marker Line Symbol. Can I use the same trick (something as follow) to check whether this Marker Line Symbol is build up from which type of Marker Symbol? If TypeOf pSbl Is IMarkerLineSymbol Then     MsgBox "It is a Marker Line Symbol"     If TypeOf pSbl Is ICharacterMarkerSymbol Then         MsgBox "It is a Character Marker Symbol"     elseif TypeOf pSbl Is IPictureMarkerSymbol Then         MsgBox "It is a Picture Marker Symbol"     End if End If ... View more

I can only find properties like "Width", "Color", "Outline Color", why the "Units" property is not found from ISymbol and it's co-classes? Where can I obtain the Units property using VBA? ... View more

I am writing a VBA program to extract symbol properties under feature layers of a MxDocument. I'm able to extract properties like symbol colors and line width, but when I try to get more detail, I'm not able to tell whether a symbol is SimpleLineSymbol or MarkerLineSymbol. My program is like this: Dim pGFL As IGeoFeatureLayer Dim pSbl As ISymbol Dim pSPR As ISimplyRenderer Dim pMLS As IMarkerLineSymbol If TypeOf pGFL.Renderer Is ISimpleRenderer Then     Set pSPR = pGFL.Renderer     If pFL.FeatureClass.ShapeType = esriGeometryPolyline Then         Set pMLS = pSbl         MsgBox "Marker Symbol Size = " & pMLS.MarkerSymbol.Size     End If End If But I got error when I came over Set pMLS = pSbl. If I define pMLS as MarkerLineSymbol instead of IMarkerLineSymbol, the statement Set pMLS = pSbl works, but then it'll say pMLS.MarkerSymbol is a undefined method. If I declare pMLS as ILineSymbol, I can set pMLS = pSbl, but I'm not able to get the MarkerSymbol related properties. Could anyone share with me: (1) How to obtain the Marker Symbol related properties from a ISymbol? (2) How to determine the type of Symbol, e.g., SimpleLineSymbol or MarkerLineSymbol? Thanks. ... View more