filename = Path.GetFileName(Path)
extension = Path.GetExtension(Path)
fullPath = Path.GetFullPath(Path)
directoryName = Path.GetDirectoryName(Path)
FilenameWithoutExt = Path.GetFileNameWithoutExtension(Path)
However, I have need to use these function for similar things that the Path class cannot handle, so I am including them in this posting.
Here are 4 functions in VB.NET and C# that do path and filename decomposition:
1) GetFileNameFromPath will return a filename and its extension from a full directory path.
GetFileNameFromPath("c:\temp\test.txt") returns "test.txt"
GetFileNameFromPath("test.txt") returns "test.txt"
2) GetFileNameWithoutExtFromPath will return a filename without its extension from a full directory path.
GetFileNameWithoutExtFromPath("c:\temp\test.txt") returns "test"
GetFileNameWithoutExtFromPath("test.txt") returns "test"
GetDirFromPath("c:\temp\test.txt") returns "C:\temp"
GetDirFromPath("test.txt") returns ""
4) GetExtensionFromPath will return only the file extension from either a filename or a full path.
GetExtensionFromPath("c:\temp\test.txt") returns ".txt"
GetExtensionFromPath("test.txt") returns ".txt"
VB.NET Code:
Public Function GetDirFromPath(ByVal path As String) _
As String
Try
Return path.Substring(0, path.LastIndexOf("\") + 1)
Catch ex As Exception
' error
Return ""
End Try
End Function
'
Public Function GetFileNameFromPath(ByVal path _
As String) As String
Try
Return path.Substring(path.LastIndexOf("\") + 1)
Catch ex As Exception
' error
Return ""
End Try
End Function
'
Public Function GetFileNameWithoutExtFromPath(ByVal path _
As String) As String
Try
Dim filename As String = _
path.Substring(path.LastIndexOf("\") + 1)
Dim pos As Integer = filename.LastIndexOf(".")
If pos <> -1 Then
Return filename.Substring(0, pos)
Else
Return filename
End If
Catch ex As Exception
' error
Return ""
End Try
End Function
'
Public Function GetExtensionFromPath(ByVal path _
As String) As String
Try
Dim pos As Integer = _
path.LastIndexOf(".")
If pos <> -1 Then
Return path.Substring(pos)
Else
Return ""
End If
Catch ex As Exception
' error
Return ""
End Try
End Function
C# Code:
public String GetDirFromPath(String path)
{
try
{
return path.Substring(0, path.LastIndexOf("\\") + 1);
}
catch (Exception ex)
{
// error
return "";
}
}
public String GetFileNameFromPath(String path)
{
try
{
return path.Substring(
path.LastIndexOf("\\") + 1);
}
catch (Exception ex)
{
// error
return "";
}
}
public String GetFileNameWithoutExtFromPath(String path)
{
try
{
String filename = path.Substring(
path.LastIndexOf("\\") + 1);
int pos = filename.LastIndexOf(".");
if (pos != -1)
return filename.Substring(0, pos);
else
return filename;
}
catch (Exception ex)
{
// error
return "";
}
}
public String GetExtensionFromPath(String path)
{
try
{
int pos = path.LastIndexOf(".");
if (pos != -1)
return path.Substring(pos);
else
return "";
}
catch (Exception ex)
{
// error
return "";
}
}
3 comments:
Thanks - that was useful!
thank you great stuff!
Where do you Specify the Path of the Dir you are looking at?
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