Only write thickness to excel if value is greater than 0

ExportDXF/ExportDXF.csproj

@@ -22,7 +22,7 @@
     <UpdatePeriodically>false</UpdatePeriodically>
     <UpdateRequired>false</UpdateRequired>
     <MapFileExtensions>true</MapFileExtensions>
-    <ApplicationRevision>5</ApplicationRevision>
+    <ApplicationRevision>6</ApplicationRevision>
     <ApplicationVersion>1.0.0.%2a</ApplicationVersion>
     <UseApplicationTrust>false</UseApplicationTrust>
     <PublishWizardCompleted>true</PublishWizardCompleted>

ExportDXF/Forms/MainForm.cs

@@ -399,7 +399,10 @@ namespace ExportDXF.Forms
 					partsSheet.Cells[row, 2].Value = item.Quantity;
 					partsSheet.Cells[row, 3].Value = item.Description;
 					partsSheet.Cells[row, 4].Value = item.PartNo;
-					partsSheet.Cells[row, 5].Value = item.Thickness;
+
+					if (item.Thickness > 0)
+						partsSheet.Cells[row, 5].Value = item.Thickness;
+
 					partsSheet.Cells[row, 6].Value = item.Material;
 				}