How to: Convert DXF annotation to line labels, using ArcGIS Desktop
Open ArcMap
Set the coordinate system of the data frame (eg. GDA94/UTM 55)
Add the DXF to ArcMap
Create a new File Geodatabase
Right click the new GDB and create a new Feature Dataset, setting the coordinate system of the feature dataset to the CRS set at step 2 (eg. GDA94/UTM55)
Right click the DXF annotation layer and choose Convert to Geodatabase Annotation
Set the output feature class location to your GDB
In the GDB, right click the annotation layer and choose Export to Shapefile (single). This creates a polygon shapefile.
Right click the polyline layer in the DXF and choose Data->Export Data. Save it as a shapefile. Make sure you choose the option “Use the same coordinate system and the data frame”.
Now right click the new line shapefile and choose Joins and Relates -> Join
Choose the options as shown below. The LR Labels Pol is the polygon shapefile that you exported from the GDB.
The resultant line Shapefile will have a field called TextString that can be used to label the lines in Mango.