Problem: The Add Field and Delete Field options are inactive in the attribute table.How To: Convert a number field to a string field.The final expression should look similar to following:.Scroll to the Requests list and double-click AsNumber.
Three solutions are described below the first pertaining to ArcGIS Pro 1.x and 2.x the second solution is for ArcGIS Desktop 10.x and the third is for older software (such as ArcView GIS 3.x). To preserve data integrity (especially if sharing or importing data from outside sources), the method for converting fields to different types is to copy the data to a new field of the desired type. In some scenarios, it is necessary to convert a field of string (text) values in an attribute table to numeric values, typically because the original data type was not set or recognized, or so that proper data analysis can be performed. How To: Convert a string field to a numeric field Summary