BuildProvider.GenerateCode(AssemblyBuilder) Metode

Definisi

Ruang nama:

System.Web.Compilation

Rakitan:

System.Web.dll

Menghasilkan kode sumber untuk jalur virtual penyedia build, dan menambahkan kode sumber ke penyusun rakitan tertentu.

public:
 virtual void GenerateCode(System::Web::Compilation::AssemblyBuilder ^ assemblyBuilder);

public virtual void GenerateCode(System.Web.Compilation.AssemblyBuilder assemblyBuilder);

abstract member GenerateCode : System.Web.Compilation.AssemblyBuilder -> unit
override this.GenerateCode : System.Web.Compilation.AssemblyBuilder -> unit

Public Overridable Sub GenerateCode (assemblyBuilder As AssemblyBuilder)

Parameter

assemblyBuilder

AssemblyBuilder

Penyusun perakitan yang mereferensikan kode sumber yang dihasilkan oleh penyedia build.

Contoh

Contoh kode berikut mengilustrasikan implementasi penyedia build sederhana, mewarisi dari kelas dasar abstrak BuildProvider . Penyedia build mengambil alih CodeCompilerType, , GetGeneratedTypedan GenerateCode anggota kelas dasar.

using System;
using System.Collections;
using System.IO;
using System.Text;
using System.Web;
using System.Web.Compilation;
using System.CodeDom.Compiler;
using System.CodeDom;
using System.Security;
using System.Security.Permissions;

// Define a simple build provider implementation.
[PermissionSet(SecurityAction.Demand, Unrestricted = true)]
public class SampleBuildProvider : BuildProvider
{
    // Define an internal member for the compiler type.
    protected CompilerType _compilerType = null;

    public SampleBuildProvider()
    {
        _compilerType = GetDefaultCompilerTypeForLanguage("C#");
    }

    // Return the internal CompilerType member 
    // defined in this implementation.
    public override CompilerType CodeCompilerType
    {
        get { return _compilerType; }
    }

    // Define the build provider implementation of the GenerateCode method.
    public override void GenerateCode(AssemblyBuilder assemBuilder)
    {
        // Generate a code compile unit, and add it to
        // the assembly builder.

        TextWriter tw = assemBuilder.CreateCodeFile(this);
        if (tw != null)
        {
            try
            {
                // Generate the code compile unit from the virtual path.
                CodeCompileUnit compileUnit = SampleClassGenerator.BuildCompileUnitFromPath(VirtualPath);

                // Generate the source for the code compile unit, 
                // and write it to a file specified by the assembly builder.
                CodeDomProvider provider = assemBuilder.CodeDomProvider;
                provider.GenerateCodeFromCompileUnit(compileUnit, tw, null);
            }
            finally
            {
                tw.Close();
            }
        }
    }

    public override System.Type GetGeneratedType(CompilerResults results)
    {
        string typeName = SampleClassGenerator.TypeName;

        return results.CompiledAssembly.GetType(typeName);
    }
}

Imports System.Collections
Imports System.IO
Imports System.Text
Imports System.Web
Imports System.Web.Compilation
Imports System.CodeDom.Compiler
Imports System.CodeDom
Imports System.Security
Imports System.Security.Permissions

<PermissionSet(SecurityAction.Demand, Unrestricted := true)> _
Public Class SampleBuildProvider
    Inherits BuildProvider

    Protected _compilerType As CompilerType = Nothing

    Public Sub New()
        _compilerType = GetDefaultCompilerType()
    End Sub

    ' Return the internal CompilerType member 
    ' defined in this implementation.
    Public Overrides ReadOnly Property CodeCompilerType() As CompilerType
        Get
            CodeCompilerType = _compilerType
        End Get
    End Property


    ' Define the build provider implementation of the GenerateCode method.
    Public Overrides Sub GenerateCode(ByVal assemBuilder As AssemblyBuilder)
        ' Generate a code compile unit, and add it to
        ' the assembly builder.

        Dim tw As TextWriter = assemBuilder.CreateCodeFile(Me)
        If Not tw Is Nothing Then
            Try
                ' Generate the code compile unit from the virtual path.
                Dim compileUnit As CodeCompileUnit = _
                        SampleClassGenerator.BuildCompileUnitFromPath(VirtualPath)

                ' Generate the source for the code compile unit, 
                ' and write it to a file specified by the assembly builder.
                Dim provider As CodeDomProvider = assemBuilder.CodeDomProvider
                provider.GenerateCodeFromCompileUnit(compileUnit, tw, Nothing)
            Finally
                tw.Close()
            End Try

        End If
    End Sub

    Public Overrides Function GetGeneratedType(ByVal results As CompilerResults) As System.Type
        Dim typeName As String = SampleClassGenerator.TypeName

        Return results.CompiledAssembly.GetType(typeName)
    End Function

End Class

Keterangan

Untuk menerapkan penyedia build yang menghasilkan kode sumber untuk jenis file kustom, dapatkan kelas dari BuildProvider kelas, dan ambil alih GenerateCode metode untuk menghasilkan kode sumber untuk jenis file yang didukung.

Biasanya, implementasi penyedia GenerateCode build membaca VirtualPath properti, mengurai konten, dan menambahkan kode sumber yang dihasilkan ke objek yang ditentukan AssemblyBuilder . Anda dapat berkontribusi kode sumber ke rakitan dalam bentuk TextWriter objek atau grafik CodeDOM. Untuk menambahkan kode sumber ke rakitan melalui TextWriter objek, gunakan CreateCodeFile metode . Untuk menambahkan kode sumber dalam grafik CodeDOM ke rakitan, gunakan metode .AddCodeCompileUnit

Jika penyedia build menghasilkan kode sumber dalam bahasa pemrograman tertentu, Anda harus mengambil alih CodeCompilerType properti untuk mengembalikan objek untuk bahasa pemrograman yang CompilerType didukung.

Lihat juga

• OpenReader
• OpenStream
• AssemblyBuilder
• Pembuatan dan Kompilasi Kode Sumber Dinamis