Input# Statement

Reads data from an open sequential file.

Notkun:

Input #FileNumber As Integer; var1[, var2[, var3[,...]]]

Viðföng:

FileNumber: Number of the file that contains the data that you want to read. The file must be opened with the Open statement using the key word INPUT.

var: A numeric or string variable that you assign the values read from the opened file to.

The Input# statement reads numeric values or strings from an open file and assigns the data to one or more variables. A numeric variable is read up to the first carriage return (Asc=13), line feed (Asc=10), space, or comma. String variables are read to up to the first carriage return (Asc=13), line feed (Asc=10), or comma.

Data and data types in the opened file must appear in the same order as the variables that are passed in the "var" parameter. If you assign non-numeric values to a numeric variable, "var" is assigned a value of "0".

Records that are separated by commas cannot be assigned to a string variable. Quotation marks (") in the file are disregarded as well. If you want to read these characters from the file, use the Line Input# statement to read pure text files (files containing only printable characters) line by line.

If the end of the file is reached while reading a data element, an error occurs and the process is aborted.

Dæmi:


Sub ExampleWorkWithAFile
Dim iCount As Integer
Dim sName As String
Dim sValue As Integer
Dim sFileName As String
 
sFileName = "c:\data.txt"
iCount = Freefile
 
' Write data ( which we will read later with Input ) to file
Open sFileName For Output As iCount
sName = "Hamburg"
sValue = 200
Write #iCount, sName, sValue
sName = "New York"
sValue = 300
Write #iCount, sName, sValue
sName = "Miami"
sValue = 459
Write #iCount, sName, sValue
Close #iCount
 
iCount = Freefile
' Read data file using Input
Open sFileName For Input As iCount
Input #iCount; sName, sValue
MsgBox sName & " " & sValue
Input #iCount; sName, sValue
MsgBox sName & " " & sValue
Input #iCount; sName, sValue
MsgBox sName & " " & sValue
Close #iCount
End Sub

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