Importing Files Into Excel - Skip if not Found

问题

This is my first question here, I have a macro to import .txt files "Semicolon" delimited into Excel. Each file is name specific, and each file is imported in a new sheet. But if one of theses files doesn't exists, the macro Fails. I want to add an "On Erro" to handle these cases, if the file doesn't exists, skip it. Heres the code:

Sub Importar_Dep()

Dim Caminho As String


Caminho = Sheets("DADOS").Cells(5, 8).Value
    Sheets("DEP").Select
    With ActiveSheet.QueryTables.Add(Connection:= _
        "TEXT;" & Caminho, _
        Destination:=Range("$A$1"))
        .Name = "RECONQUISTA_DEP_0"
        .FieldNames = True
        .RowNumbers = False
        .FillAdjacentFormulas = False
        .PreserveFormatting = True
        .RefreshOnFileOpen = False
        .RefreshStyle = xlInsertDeleteCells
        .SavePassword = False
        .SaveData = True
        .AdjustColumnWidth = True
        .RefreshPeriod = 0
        .TextFilePromptOnRefresh = False
        .TextFilePlatform = 850
        .TextFileStartRow = 1
        .TextFileParseType = xlDelimited
        .TextFileTextQualifier = xlTextQualifierDoubleQuote
        .TextFileConsecutiveDelimiter = False
        .TextFileTabDelimiter = False
        .TextFileSemicolonDelimiter = True
        .TextFileCommaDelimiter = False
        .TextFileSpaceDelimiter = False
        .TextFileColumnDataTypes = Array(1, 1, 1, 1, 1, 1, 1, 1)
        .TextFileTrailingMinusNumbers = True
        .Refresh BackgroundQuery:=False
    End With
End Sub

回答1:

Here is your code with the check if the file exist:

Sub Importar_Dep()

    Dim Caminho As String
    Caminho = Sheets("DADOS").Cells(5, 8).Value
    Sheets("DEP").Select

    '+++++ Added block to check if file exists +++++
    Dim FS
    Set FS = CreateObject("Scripting.FileSystemObject")

    Dim TextFile_FullPath As String
    'The textfile_fullPath should be like:
    TextFile_FullPath = "C:\Users\Username\Desktop\" & _
                         RECONQUISTA_DEP_0 & _
                         ".txt"

    If FS.FileExists(TextFile_FullPath) Then
    '++++++++++++++++++++++++++++++++++++++++++++++++
        With ActiveSheet.QueryTables.Add(Connection:= _
            "TEXT;" & Caminho, _
            Destination:=Range("$A$1"))
            .Name = "RECONQUISTA_DEP_0"
            .FieldNames = True
            .RowNumbers = False
            .FillAdjacentFormulas = False
            .PreserveFormatting = True
            .RefreshOnFileOpen = False
            .RefreshStyle = xlInsertDeleteCells
            .SavePassword = False
            .SaveData = True
            .AdjustColumnWidth = True
            .RefreshPeriod = 0
            .TextFilePromptOnRefresh = False
            .TextFilePlatform = 850
            .TextFileStartRow = 1
            .TextFileParseType = xlDelimited
            .TextFileTextQualifier = xlTextQualifierDoubleQuote
            .TextFileConsecutiveDelimiter = False
            .TextFileTabDelimiter = False
            .TextFileSemicolonDelimiter = True
            .TextFileCommaDelimiter = False
            .TextFileSpaceDelimiter = False
            .TextFileColumnDataTypes = Array(1, 1, 1, 1, 1, 1, 1, 1)
            .TextFileTrailingMinusNumbers = True
            .Refresh BackgroundQuery:=False
        End With

    End If

End Sub

Like in your comment, if you want to run through all files that have a certain name in common (a filter), you can use this code. The above modifications have then became useless because with this you don't have to check if file exists anymore since it will just go through all existing files. You could have to check if the folder exists though:

Sub RunThroughAllFiles()

    Dim Caminho As String
    Caminho = Sheets("DADOS").Cells(5, 8).Value
    Sheets("DEP").Select

    Dim FS
    Set FS = CreateObject("Scripting.FileSystemObject")

    Dim Filter As String: Filter = "RECONQUISTA_DEP_*.txt"
    Dim dirTmp As String

    If FS.FolderExists(Caminho) Then
        dirTmp = Dir(Caminho & "\" & Filter)
        Do While Len(dirTmp) > 0
            Call Importar_Dep(Caminho & "\" & dirTmp, _
                            Left(dirTmp, InStrRev(dirTmp, ".") - 1))
            dirTmp = Dir
        Loop
    Else
        MsgBox "Folder """ & Caminho & """ does not exists", vbExclamation
    End If

End Sub

Sub Importar_Dep(iFullFilePath As String, iFileNameWithoutExtension)

    With ActiveSheet.QueryTables.Add(Connection:= _
        "TEXT;" & iFullFilePath, _
        Destination:=Range("$A$1"))
        .Name = iFileNameWithoutExtension
        .FieldNames = True
        .RowNumbers = False
        .FillAdjacentFormulas = False
        .PreserveFormatting = True
        .RefreshOnFileOpen = False
        .RefreshStyle = xlInsertDeleteCells
        .SavePassword = False
        .SaveData = True
        .AdjustColumnWidth = True
        .RefreshPeriod = 0
        .TextFilePromptOnRefresh = False
        .TextFilePlatform = 850
        .TextFileStartRow = 1
        .TextFileParseType = xlDelimited
        .TextFileTextQualifier = xlTextQualifierDoubleQuote
        .TextFileConsecutiveDelimiter = False
        .TextFileTabDelimiter = False
        .TextFileSemicolonDelimiter = True
        .TextFileCommaDelimiter = False
        .TextFileSpaceDelimiter = False
        .TextFileColumnDataTypes = Array(1, 1, 1, 1, 1, 1, 1, 1)
        .TextFileTrailingMinusNumbers = True
        .Refresh BackgroundQuery:=False
    End With

End Sub

For more information see Dir, FileExists and FolderExists

回答2:

Here:

Sub Abrir_PORT()

    Dim Caminho As String
    Caminho = Sheets("DADOS").Cells(5, 5).Value
    Sheets("PORT").Select

    Dim FS
    Set FS = CreateObject("Scripting.FileSystemObject")

    Dim Filter As String: Filter = "ATENTO_TLMKT_REC*.txt"
    Dim dirTmp As String

    If FS.FolderExists(Caminho) Then
        dirTmp = Dir(Caminho & "\" & Filter)
        Do While Len(dirTmp) > 0
            Call Importar_PORT(Caminho & "\" & dirTmp, _
                            Left(dirTmp, InStrRev(dirTmp, ".") - 1))
            dirTmp = Dir
        Loop
    End If

End Sub

Sub Importar_PORT(iFullFilePath As String, iFileNameWithoutExtension)

    With ActiveSheet.QueryTables.Add(Connection:= _
        "TEXT;" & iFullFilePath, _
        Destination:=Range("$A$1"))
        .Name = iFileNameWithoutExtension
        .FieldNames = True
        .RowNumbers = False
        .FillAdjacentFormulas = False
        .PreserveFormatting = True
        .RefreshOnFileOpen = False
        .RefreshStyle = xlInsertDeleteCells
        .SavePassword = False
        .SaveData = True
        .AdjustColumnWidth = True
        .RefreshPeriod = 0
        .TextFilePromptOnRefresh = False
        .TextFilePlatform = 850
        .TextFileStartRow = 1
        .TextFileParseType = xlDelimited
        .TextFileTextQualifier = xlTextQualifierDoubleQuote
        .TextFileConsecutiveDelimiter = False
        .TextFileTabDelimiter = False
        .TextFileSemicolonDelimiter = True
        .TextFileCommaDelimiter = False
        .TextFileSpaceDelimiter = False
        .TextFileColumnDataTypes = Array(1, 1, 1, 1, 1, 1, 1, 1)
        .TextFileTrailingMinusNumbers = True
        .Refresh BackgroundQuery:=False

    iRow = 2

    Do While Sheets("PORT").Cells(iRow, 1) <> ""

                If Cells(iRow, 2) = IsNumber Then

                Else

                Rows(iRow).Select
                Selection.EntireRow.Delete

                iRow = iRow - 1
                contagem = contagem + 1

                End If

 iRow = iRow + 1

 Loop

    End With

End Sub

来源：https://stackoverflow.com/questions/21555746/importing-files-into-excel-skip-if-not-found