I am finding that parts created with Solidworks 2013 or Solidworks 2014 seem to not update their BendAllowanceType when it is changed in code. The BendAllowanceType can be changed in the Sheet-Metal feature by selecting either Bend Table, K-Factor, Bend Allowance, etc in the drop down menu in the Edit Feature pane. The BendAllowanceType changes when changed in code for parts created in older versions of Solidworks.

The difference I see between previous parts and parts created with Solidworks>2012 is that there is an additional child Sheet-Metal item under the Sheet-Metal feature in the feature tree.

Here is my code that changes the BendAllowanceType in older versions of Solidworks, but not in newer versions.

Dim swModel As ModelDoc2 = Iswapp.IActiveDoc

swModel.DeleteBendTable()      'Delete old bend table so the new one is loaded from the xls file - this changes the BendAllowanceType back to k-factor which is not what we want

model = swModel

Dim bendTable As String = "C:\BendTable.xls"

Dim smFeatData As SheetMetalFeatureData

Dim featName As String

Dim swCustBendAllow As CustomBendAllowance

For Each swFeat As Feature In model.FeatureManager.GetFeatures(True)

    featName = swFeat.GetTypeName()

    If featName = "SheetMetal" Then

       'Insert bend table - do not want k-factor

       smFeatData = swFeat.GetDefinition

       'trying this out to see if it works. Doesn't work with new parts but works with old parts

       smFeatData.AccessSelections(swModel, Nothing)

       swCustBendAllow = smFeatData.GetCustomBendAllowance

       swCustBendAllow.Type = swBendAllowanceTypes_e.swBendAllowanceBendTable ' changes the Type to a 1 which looks correct but the Sheet-Metal feature does not change in the bend allowance section

       smFeatData.SetCustomBendAllowance(swCustBendAllow)

       swFeat.ModifyDefinition(smFeatData, swModel, Nothing)

       'Old method which only works with parts created with sw<2013 where the sheetmetal feature does not have a subfeature

       smFeatData.BendAllowanceType = swBendAllowanceTypes_e.swBendAllowanceBendTable

       smFeatData.BendTableFile = bendTable

       swFeat.IModifyDefinition2(smFeatData, model, Nothing)

    End If

Next

I have been struggling with this for over a year and figured it would be fixed in Solidworks 2014 but it has not been.

Thank you, Luke

Here is the bend allowance asetting that goes back to k-factor when the above code is run for a part created in sw2013 or sw2014.

Here's the feature tree for a part created in sw2012. Notice that there is no sheet-metal feature under the sheet-metal feature.

Here's the feature tree for a part created in sw2014. Notice that there is a sheet-metal feature under the sheet-metal feature. I'm not sure if this is what is causing the issue, but it's the only difference I see. I tried going to the firstchild after getting to the sheetmetal feature but it returned Nothing.