Visual Basic Coding

General information for the business: Software vendor
Kind of development: Customization of existing program
Description of requirements/functionality: VB Code Requirements

I have a form with a number of textboxes on it and a couple of ComboBoxes. I also have a text file where the populated text boxes are saved as a string in this text file.

I am already able to enter details into the form and save to the text file as it stands and recall all records to a listbox, but this is too cumbersome, as I need it split into individual trimmed fields in a certain order of populating a certain order of text boxes.

Each new entry saved to the text file is appended below the last record, and each field is delimited with a comma and surrounded by parenthesis. What I am needing is to be able to retrieve details of each string record and write them back to populate the text boxes determined by the ComboBox value that has been selected. So in other words, the ComboBox dropdown list needs to populate a dropdown list of a certain pre-defined field in this text file string entry (CustomerField) on form load, for each string record or entry.

I assume that this would be a search event once the ComboBox dropdown item has been selected. This is critically important, as I need to be able to call up a record and effect changes or amendments to it and then it needs to overwrite the existing string record with the same name in the text file records list. Also the code must run a check each time a new entry is made and saved to file, and MsgBox a warning if the record already exists, to avoid duplication. I also need the fields extracted to be neatly trimmed of parenthesis and commas before they populate these text box and ComboBox fields.

For a seasoned professional VB developer, this should be fairly easily achievable, so I need someone who knows exactly what to do and not need to research too much as to what to do, in order to get this done in the shortest space of time. NB* Please can you include detailed comments in the code explaining what each line does, this is also very important for me to be able to deploy this code in my form, as I am a novice in VB, but have enough knowledge to create forms and simple code.
OS requirements: Windows
Extra notes: VB Code Requirements

I have a form with a number of textboxes on it and a couple of ComboBoxes. I also have a text file where the populated text boxes are saved as a string in this text file.

I am already able to enter details into the form and save to the text file as it stands and recall all records to a listbox, but this is too cumbersome, as I need it split into individual trimmed fields in a certain order of populating a certain order of text boxes.

Each new entry saved to the text file is appended below the last record, and each field is delimited with a comma and surrounded by parenthesis. What I am needing is to be able to retrieve details of each string record and write them back to populate the text boxes determined by the ComboBox value that has been selected. So in other words, the ComboBox dropdown list needs to populate a dropdown list of a certain pre-defined field in this text file string entry (CustomerField) on form load, for each string record or entry.

I assume that this would be a search event once the ComboBox dropdown item has been selected. This is critically important, as I need to be able to call up a record and effect changes or amendments to it and then it needs to overwrite the existing string record with the same name in the text file records list. Also the code must run a check each time a new entry is made and saved to file, and MsgBox a warning if the record already exists, to avoid duplication. I also need the fields extracted to be neatly trimmed of parenthesis and commas before they populate these text box and ComboBox fields.

For a seasoned professional VB developer, this should be fairly easily achievable, so I need someone who knows exactly what to do and not need to research too much as to what to do, in order to get this done in the shortest space of time. NB* Please can you include detailed comments in the code explaining what each line does, this is also very important for me to be able to deploy this code in my form, as I am a novice in VB, but have enough knowledge to create forms and simple code.