Processing other files in VBA macros

As a programmer, you will probably encounter many situations where other files need to be opened to read, write, or add data. Macros can help you easily manipulate these files, and the Open method is your ticket in.

Examples of scenarios for handling specific cases

Here are some applications where you can use this method:

  1. Team members update their work status in SharePoint.
  2. Update HP Quality Center with a plug-in or Excel macro.
  3. The teacher notes the list of absences on an Excel sheet and uses an insert (macro) that automatically fills in the attendance of all students in the class.
  4. Maintain a skill database for students and pull this data from various workbooks as needed, such as for competitions or tournaments.
  5. Companies create and send offers by simply filling out a form. Templates and macros can be used for this purpose.

VBA Open File Method

VBA provides a simple method for opening and manipulating files. It allows the user to read or write – or both – after opening a file.

Syntax:

Open to [Access] [Lock].

Explanation of the above parameters :

  1. Required field. This is the name of the file with information about its extension, drive, and directory.
  2. This field is required. It can be one of the following five options:
    1. Add
    2. Binary
    3. Output
    4. Login
    5. Random mode is the default mode.
  3. Access: This is an optional parameter. It lists the operations allowed in the opened file. This can be one of the following operations:
    1. Read
    2. Write to
    3. Playback and recording
  4. Lock: This is another optional parameter. It can have one of the following values, limited to an open :
    1. Just
    2. Blocking of reading
    3. Locking registration
    4. Read-write lock

Note: Labels in square brackets are optional. Access and lock panels are optional here.

Examples of opening files with VBA

Example 1: Just open the folder

It is a simple program that simply opens an Excel file.

Under open_file_demo()

Declare
a VariableOrderDim

Assign the score
= “C:UsersLAKSHMI RAMAKRISHNANDloadsProject 1.xlsx”.

Now open the file with the open declaration.
The workbooks.

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Example 2: Open an Excel workbook in read-only mode and try to write to it.

Under open_file_demo()

Declare variablesDim
pathnameDim wb as workbook

Assign the score
= “C:UsersLAKSHMI RAMAKRISHNANDloadsProject 1.xlsx”.

Now open the file with the open declaration and assign it to the wb object so it can be used later.
Set wb = Workbooks.Open(File name:=Path name, Read-only:=True)

Try writing after opening the file in read-only mode. This should cause an error.
wb.Sheets(0).Cells(1, 1).Value = “Attempt to write.

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Example 3: Open a text file and read its contents using the “Open” function and the file number.

Sub TextFile_PullData()

Declaring variables

Дим int_txtfile as IntegerDim str_file_Path as StringDim str_File_Content as StringDim str_File_Content as String

Assign a variable to the file path.
str_file_Path = “C:UsersLAKSHMI RAMAKRISHNANOneDriveDocumentssample.txt”.

Find the next available folder number used by the “Public Folder” function.
int_txtfile = FreeFile

Open the specified text file with theOpen function str_file_Path For Input As int_txtfile

The contents of the file are stored in a variable.
str_File_Content = Input(LOF(int_txtfile), int_txtfile)

Print the contents of a file using the variable in which it is stored.
Troubleshooting. Print str_File_Content

To close an open text fileInt_txt file

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Error: The file name is not specified. “alt=”Pin it!” data-ezsrc=”/utilcave_com/social/pin_it.png” />

Error: The file name is not specified. “alt=”Share on Facebook” data-ezsrc=”/utilcave_com/social/fb_share.png” />.

Example 4: Reading and then writing the contents of a text file

In this example, we first open a text file in read mode and copy the contents to a variable. Next, we modify the contents and open the same text file in write mode. Finally, we write the modified contents into the directory.

Sub txt_file_FindReplace()

Scale txt_file as IntegerDim file_path as stringDim file_content as string

Assign a variable to the file path.
file_path = “C:UsersLAKSHMI RAMAKRISHNANOneDriveDocumentssample.txt”.

Define the following available file number to be used by the FileOpen function.
txt_file = FreeFile

The text file is opened in read-only modeOpen the path of the input file as a txt file

Store the contents of the file in a variable.
file_content = Input(LOF(txt_file), txt_file)

Close open text fileClose text file

Find and replace text
file_content = Replace(file_content, “It”, “This file”).

Define the following available file number to be used by the FileOpen function.
txt_file = FreeFile

Open the text file to write itOpen the path to the file to output it as a txt file

Write the changed content to the print file
#txt_file, file_content

Close open text fileClose text file

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How to Open Files Using VBA

Error: The file name is not specified. “alt=”Pin it!” data-ezsrc=”/utilcave_com/social/pin_it.png” />

Error: The file name is not specified. “alt=”Share on Facebook” data-ezsrc=”/utilcave_com/social/fb_share.png” />.

Example 5: Adding data to a text file

In this example, we are adding additional text to the end of an existing text file that already contains some data.

Sub txt_file_append()

Declaring variables

Дим int_txtfile as IntegerDim str_file_Path as StringDim str_File_Content as StringDim str_File_Content as String

Assign a variable to the file path.
str_file_Path = “C:UsersLAKSHMI RAMAKRISHNANOneDriveDocumentssample.txt”.

Find the next available folder number used by the “Public Folder” function.
int_txtfile = FreeFile

Open the specified text file with the Open function str_file_Path For Append as int_txtfile

Write the content at the end of the filePrint
#int_txtfile, “This is additional content” Print
#int_txtfile, “Warm regards” Print
#int_txtfile, “Laksmi Ramakrishnan”.

To close an open text fileInt_txt file

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How to Open Files Using VBA

Error: The file name is not specified. “alt=”Pin it!” data-ezsrc=”/utilcave_com/social/pin_it.png” />

Error: The file name is not specified. “alt=”Share on Facebook” data-ezsrc=”/utilcave_com/social/fb_share.png” />.

Conclusion

Although there are many ways to open files with different extensions with VBA, in this article we have tried to focus on the simplest and clearest ways.

The “open” mode in this open profile method plays an important role. If we try to add to or write to a file opened in read mode, an error is generated that stops the execution of the program. Therefore, the read mode can be considered as “data protection” for the original open file.

Frequently asked questions

How are files displayed in VBA?

VBA code to display the file – ExcelSirJi

How do I open files in the Excel VBA folder?

Open VBA Excel Workbook: Open VBA files with these 2 …

How do I activate an open workbook in Excel VBA?

Activate the VBA workbook (Excel file) – Excel Champions

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