> For the complete documentation index, see [llms.txt](https://pinvokeisalive.gitbook.io/pinvoke/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://pinvokeisalive.gitbook.io/pinvoke/desktopfunctions/kernel32/getfilesizeex.md).

# GetFileSizeEx

### C# Signature:

```cs
[DllImport("kernel32.dll")]
static extern bool GetFileSizeEx(IntPtr hFile, out long lpFileSize);
```

### VB.Net Signature:

```cs
<DllImport("kernel32.dll",CharSet:=CharSet.Auto)> _
Public Shared Function GetFileSizeEx( _
                <[In]()> ByVal hFile As IntPtr, _
                <[In](), Out()> ByRef lpFileSize As Long) As Boolean
```

### Sample Code:

```cs
IntPtr handle = CreateFile(PathString, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_READONLY, 0); //PInvoked too
        if (handle.ToInt32() == -1) 
        {
        return; 
        }
        long fileSize;
        bool result = GetFileSizeEx(handle, out fileSize);
        if (!result) 
        {
        return;
        }
```