CompilerInfo.IsCodeDomProviderTypeValid 屬性

定義

命名空間:

System.CodeDom.Compiler

組件:

System.CodeDom.dll

來源:

CompilerInfo.cs

回傳一個值，表示語言提供者實作是否已在電腦上設定。

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

public bool IsCodeDomProviderTypeValid { get; }

member this.IsCodeDomProviderTypeValid : bool

Public ReadOnly Property IsCodeDomProviderTypeValid As Boolean

屬性值

Boolean

true如果語言提供者實作類型在電腦上已設定;否則，。 false

範例

以下程式碼範例判斷輸入語言在電腦上是否有已設定 CodeDomProvider 的實作。 若有指定語言的提供者設定，範例會顯示語言提供者設定。 此程式碼範例是本類別更大範例 CompilerInfo 的一部分。

CompilerInfo info = CodeDomProvider.GetCompilerInfo(configLanguage);

// Check whether there is a provider configured for this language.
if (info.IsCodeDomProviderTypeValid)
{
    // Get a provider instance using the configured type information.
    CodeDomProvider provider;
    provider = (CodeDomProvider)Activator.CreateInstance(info.CodeDomProviderType);

    // Display information about this language provider.
    Console.WriteLine("Language provider:  {0}",
        provider.ToString());
    Console.WriteLine();
    Console.WriteLine("  Default file extension:  {0}",
        provider.FileExtension);
    Console.WriteLine();

    // Get the compiler settings for this language.

    CompilerParameters langCompilerConfig = info.CreateDefaultCompilerParameters();

    Console.WriteLine("  Compiler options:        {0}",
        langCompilerConfig.CompilerOptions);
    Console.WriteLine("  Compiler warning level:  {0}",
        langCompilerConfig.WarningLevel);
}
else
{
    // Tell the user that the language provider was not found.
    Console.WriteLine("There is no provider configured for input language \"{0}\".",
        configLanguage);
}

Dim info As CompilerInfo = CodeDomProvider.GetCompilerInfo(configLanguage)

' Check whether there is a provider configured for this language.
If info.IsCodeDomProviderTypeValid Then
   ' Get a provider instance using the configured type information.
   Dim provider As CodeDomProvider
   provider = CType(Activator.CreateInstance(info.CodeDomProviderType), CodeDomProvider)
   
   ' Display information about this language provider.
   Console.WriteLine("Language provider:  {0}", _
       provider.ToString())
   Console.WriteLine()
   Console.WriteLine("  Default file extension:  {0}", _
       provider.FileExtension)
   Console.WriteLine()
   
   ' Get the compiler settings for this language.
   Dim langCompilerConfig As CompilerParameters = info.CreateDefaultCompilerParameters()
   
   Console.WriteLine("  Compiler options:        {0}", _
       langCompilerConfig.CompilerOptions)
   Console.WriteLine("  Compiler warning level:  {0}", _
       langCompilerConfig.WarningLevel)
Else
   ' Tell the user that the language provider was not found.
   Console.WriteLine("There is no provider configured for input language ""{0}"".", configLanguage)
End If

備註

在存取提供者屬性或方法之前，先使用該IsCodeDomProviderTypeValid屬性檢查實作。CodeDomProvider 例如，在取得方法的語言提供者設定 GetCompilerInfo 後，先用該 IsCodeDomProviderTypeValid 屬性驗證提供者類型實作，再呼叫該 CreateProvider 方法或使用該 CodeDomProviderType 屬性。

另請參閱

• CodeDomProviderType
• CodeDomProvider