FileVersionInfo.IsPreRelease 属性

获取一个值，该值指定该文件是否为开发版本，而不是用于商业目的的发行版。

**命名空间:**System.Diagnostics
**程序集:**System（在 system.dll 中）

语法

声明
Public ReadOnly Property IsPreRelease As Boolean
用法
Dim instance As FileVersionInfo
Dim value As Boolean

value = instance.IsPreRelease

public bool IsPreRelease { get; }

public:
property bool IsPreRelease {
    bool get ();
}

/** @property */
public boolean get_IsPreRelease ()

public function get IsPreRelease () : boolean

属性值

如果该文件是预发行版本，则为 true；否则为 false。

示例

下面的示例调用 GetVersionInfo 来获取“记事本”(Notepad) 的 FileVersionInfo。然后，它在文本框内显示该版本是否为预发行版本。这段代码假定已经实例化 textBox1。

Private Sub GetIsPreRelease()
    ' Get the file version for the notepad.
    Dim myFileVersionInfo As FileVersionInfo = _
        FileVersionInfo.GetVersionInfo("%systemroot%\Notepad.exe")
    
    ' Print whether the file is a prerelease version.
    textBox1.Text = "File is prerelease version " & myFileVersionInfo.IsPreRelease
End Sub 'GetIsPreRelease

private void GetIsPreRelease() {
    // Get the file version for the notepad.
    FileVersionInfo myFileVersionInfo = FileVersionInfo.GetVersionInfo("%systemroot%\\Notepad.exe");
 
    // Print whether the file is a prerelease version.
    textBox1.Text = "File is prerelease version " + myFileVersionInfo.IsPreRelease;
 }
    

private:
   void GetIsPreRelease()
   {
      // Get the file version for the notepad.
      FileVersionInfo^ myFileVersionInfo = FileVersionInfo::GetVersionInfo( "%systemroot%\\Notepad.exe" );
      
      // Print whether the file is a prerelease version.
      textBox1->Text = String::Concat( "File is prerelease version ", myFileVersionInfo->IsPreRelease );
   }

private void GetIsPreRelease()
{
    // Get the file version for the notepad.
    FileVersionInfo myFileVersionInfo = 
        FileVersionInfo.GetVersionInfo("%systemroot%\\Notepad.exe");

    // Print whether the file is a prerelease version.
    textBox1.set_Text("File is prerelease version " 
        + myFileVersionInfo.get_IsPreRelease());
} //GetIsPreRelease

private function GetIsPreRelease() {
    //Get the file version for the notepad.
    var myFileVersionInfo : FileVersionInfo = FileVersionInfo.GetVersionInfo("%systemroot%\\Notepad.exe");
 
    //Print whether the file is a prerelease version.
    textBox1.Text = "File is prerelease version " + myFileVersionInfo.IsPreRelease;
 }
    

平台

Windows 98、Windows 2000 SP4、Windows Millennium Edition、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。

版本信息

.NET Framework

受以下版本支持：2.0、1.1、1.0

请参见

参考

FileVersionInfo 类
FileVersionInfo 成员
System.Diagnostics 命名空间