C# Signature:

/// <summary>
/// Determines if a file is an HTML file. The determination is made based on the content type that is registered for the file's extension.
/// </summary>
/// <param name="pszFile">The address of a character buffer that contains the path and name of the file.</param>
/// <returns>Returns nonzero if the file is an HTML file, or zero otherwise.</returns>
[DllImport("shlwapi.dll", EntryPoint = "PathIsHTMLFileW",  SetLastError = True, CharSet = CharSet.Unicode)]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool PathIsHTMLFile([MarshalAs(UnmanagedType.LPTStr)]string pszFile);

VB.NET Signature:

''' <summary>
''' Determines if a file is an HTML file. The determination is made based on the content type that is registered for the file's extension.
''' </summary>
''' <param name="pszFile">The address of a character buffer that contains the path and name of the file.</param>
''' <returns>Returns nonzero if the file is an HTML file, or zero otherwise.</returns>
<DllImport("shlwapi.dll", EntryPoint:="PathIsHTMLFileW",  SetLastError:=True, CharSet:=CharSet.Unicode)> _
Public Function PathIsHTMLFile(<MarshalAs(UnmanagedType.LPTStr)>pszFile As String) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

VB Signature:

Public Declare Function PathIsHTMLFile Lib "shlwapi" _
        (ByVal pszFile As String) As Long

User-Defined Types:

None.

Alternative Managed API:

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Notes:

None.

Tips & Tricks:

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Sample Code:

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