CodeDomProvider.IsDefinedLanguage(String) 方法

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

参数

返回

true CodeDomProvider如果为指定语言配置了实现，则为 ;否则为 false。

属性

ComVisibleAttribute

例外

示例

下面的代码示例确定 CodeDomProvider 输入语言的实现，并显示语言提供程序的配置设置。 该代码示例是 CompilerInfo 类中的一个较大示例的一部分。

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

注解

计算机配置文件 （Machine.config） 中的 system.codedom> 元素包含计算机上每个实现的语言提供程序和编译器配置设置。<CodeDomProvider 该方法 IsDefinedLanguage 在提供程序配置元素中搜索指定的语言名称。

语言名称不区分大小写。

另请参阅

• CreateProvider(String)
• 编译器和语言提供程序设置架构