CodeDomProvider.IsDefinedLanguage(String) 方法

定義

命名空間:
System.CodeDom.Compiler
組件:
System.dll

測試該語言是否在電腦上已設定實 CodeDomProvider 作。

public:
 static bool IsDefinedLanguage(System::String ^ language);
[System.Runtime.InteropServices.ComVisible(false)]
public static bool IsDefinedLanguage(string language);
[<System.Runtime.InteropServices.ComVisible(false)>]
static member IsDefinedLanguage : string -> bool
Public Shared Function IsDefinedLanguage (language As String) As Boolean

參數

language
String

語言名稱。

傳回

Boolean

true 如果實 CodeDomProvider 作是為指定語言設定的;否則， false。

屬性
ComVisibleAttribute

例外狀況

ArgumentNullException

language 是 null。

SecurityException

來電者沒有所需的權限。

範例

以下程式碼範例決定輸入語言的實作， CodeDomProvider 並顯示語言提供者的設定。 此程式碼範例是本類別更大範例 CompilerInfo 的一部分。

CodeDomProvider provider;

// Check for a provider corresponding to the input language.
if (CodeDomProvider.IsDefinedLanguage(language))
{
    provider = CodeDomProvider.CreateProvider(language);

    // 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.

    CompilerInfo langCompilerInfo = CodeDomProvider.GetCompilerInfo(language);
    CompilerParameters langCompilerConfig = langCompilerInfo.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}\".",
        language);
}

Dim provider As CodeDomProvider

' Check for a provider corresponding to the input language.  
If CodeDomProvider.IsDefinedLanguage(language) Then
   provider = CodeDomProvider.CreateProvider(language)
   
   ' 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 langCompilerInfo As CompilerInfo = CodeDomProvider.GetCompilerInfo(language)
   Dim langCompilerConfig As CompilerParameters = langCompilerInfo.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}"".", _
       language)
End If

備註

機器設定檔中的 system.codedom> 元素（Machine.config）包含電腦上每個實作的語言提供者與編譯器設定。<CodeDomProvider 該 IsDefinedLanguage 方法會搜尋提供者配置元素中指定的語言名稱。

語言名稱不區分大小寫。

適用於

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