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CurFileExtensionFormat Method
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LanguageService.CurFileExtensionFormat Method

Returns the index into the file extension list that matches the extension of the specified file name.

Namespace:  Microsoft.VisualStudio.Package
Assemblies:   Microsoft.VisualStudio.Package.LanguageService.11.0 (in Microsoft.VisualStudio.Package.LanguageService.11.0.dll)
  Microsoft.VisualStudio.Package.LanguageService.12.0 (in Microsoft.VisualStudio.Package.LanguageService.12.0.dll)
  Microsoft.VisualStudio.Package.LanguageService.14.0 (in Microsoft.VisualStudio.Package.LanguageService.14.0.dll)
  Microsoft.VisualStudio.Package.LanguageService.10.0 (in Microsoft.VisualStudio.Package.LanguageService.10.0.dll)

public virtual int CurFileExtensionFormat(
	string fileName
)

Parameters

fileName
Type: System.String

[in] The file name from which to get the extension to look for.

Return Value

Type: System.Int32
If successful, returns a zero-based index into the file extension list that is returned from LanguageService.GetFormatFilterList; otherwise, returns -1 to indicate the extension is not in the file extension list.

This is used to select the appropriate filter when showing a Save As dialog box to save a file.

The base method calls LanguageService.GetFormatFilterList and then searches the list for the extension. Note that LanguageService.GetFormatFilterList returns a single string: the extensions are separated either by newlines or vertical bars ("|") and the base method can handle either separator.

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