How to add multiple sort fields on crystal reports in my application

[combo_ci]

hi i try to add sorted field on my report in my application and find this code : DatabaseFieldDefinition crDatabaseFieldDefinition = rp.Database.TablesItem[0].Fields[0]; rp.DataDefinition.SortFields.Item[0].Field(crDatabaseFieldDefinition); it work correctly.. :) i try to add multiple sort field ...but in my application the crystall reportviewer only sort report on first fild...:confused: can any one know that how i add multiple sort fields on crystal reports in my application? thnx