CodeDomProvider 类
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
为 CodeDomProvider 实现提供基类。 此类为抽象类。
public ref class CodeDomProvider abstract : System::ComponentModel::Componentpublic abstract class CodeDomProvider : System.ComponentModel.Component[System.Runtime.InteropServices.ComVisible(true)]
public abstract class CodeDomProvider : System.ComponentModel.Componenttype CodeDomProvider = class
inherit Component[<System.Runtime.InteropServices.ComVisible(true)>]
type CodeDomProvider = class
inherit ComponentPublic MustInherit Class CodeDomProvider
Inherits Component- 继承
- 派生
- 属性
示例
以下示例程序可以基于使用 Console 类打印“Hello World”的程序的 CodeDOM 模型生成和编译源代码。 提供了 Windows 窗体用户界面。 用户可以从多个选项中选择目标编程语言：C#、Visual Basic 和 JScript。
#using <System.Windows.Forms.dll>
#using <System.Drawing.dll>
#using <System.dll>
#using <Microsoft.JScript.dll>
using namespace System;
using namespace System::CodeDom;
using namespace System::CodeDom::Compiler;
using namespace System::Collections;
using namespace System::ComponentModel;
using namespace System::Diagnostics;
using namespace System::Drawing;
using namespace System::IO;
using namespace System::Windows::Forms;
using namespace Microsoft::CSharp;
using namespace Microsoft::VisualBasic;
using namespace Microsoft::JScript;
using namespace System::Security::Permissions;
// This example demonstrates building a Hello World program graph
// using System.CodeDom elements. It calls code generator and
// code compiler methods to build the program using CSharp, VB, or
// JScript. A Windows Forms interface is included. Note: Code
// must be compiled and linked with the Microsoft.JScript assembly.
namespace CodeDOMExample
{
[PermissionSet(SecurityAction::Demand, Name="FullTrust")]
public ref class CodeDomExample
{
public:
// Build a Hello World program graph using
// System::CodeDom types.
static CodeCompileUnit^ BuildHelloWorldGraph()
{
// Create a new CodeCompileUnit to contain
// the program graph.
CodeCompileUnit^ compileUnit = gcnew CodeCompileUnit;
// Declare a new namespace called Samples.
CodeNamespace^ samples = gcnew CodeNamespace( "Samples" );
// Add the new namespace to the compile unit.
compileUnit->Namespaces->Add( samples );
// Add the new namespace import for the System namespace.
samples->Imports->Add( gcnew CodeNamespaceImport( "System" ) );
// Declare a new type called Class1.
CodeTypeDeclaration^ class1 = gcnew CodeTypeDeclaration( "Class1" );
// Add the new type to the namespace's type collection.
samples->Types->Add( class1 );
// Declare a new code entry point method.
CodeEntryPointMethod^ start = gcnew CodeEntryPointMethod;
// Create a type reference for the System::Console class.
CodeTypeReferenceExpression^ csSystemConsoleType = gcnew CodeTypeReferenceExpression( "System.Console" );
// Build a Console::WriteLine statement.
CodeMethodInvokeExpression^ cs1 = gcnew CodeMethodInvokeExpression( csSystemConsoleType,"WriteLine", gcnew CodePrimitiveExpression("Hello World!") );
// Add the WriteLine call to the statement collection.
start->Statements->Add( cs1 );
// Build another Console::WriteLine statement.
CodeMethodInvokeExpression^ cs2 = gcnew CodeMethodInvokeExpression( csSystemConsoleType,"WriteLine", gcnew CodePrimitiveExpression( "Press the Enter key to continue." ) );
// Add the WriteLine call to the statement collection.
start->Statements->Add( cs2 );
// Build a call to System::Console::ReadLine.
CodeMethodReferenceExpression^ csReadLine = gcnew CodeMethodReferenceExpression( csSystemConsoleType, "ReadLine" );
CodeMethodInvokeExpression^ cs3 = gcnew CodeMethodInvokeExpression( csReadLine, gcnew array<CodeExpression^>(0) );
// Add the ReadLine statement.
start->Statements->Add( cs3 );
// Add the code entry point method to
// the Members collection of the type.
class1->Members->Add( start );
return compileUnit;
}
static void GenerateCode( CodeDomProvider^ provider, CodeCompileUnit^ compileunit )
{
// Build the source file name with the appropriate
// language extension.
String^ sourceFile;
if ( provider->FileExtension->StartsWith( "." ) )
{
sourceFile = String::Concat( "TestGraph", provider->FileExtension );
}
else
{
sourceFile = String::Concat( "TestGraph.", provider->FileExtension );
}
// Create an IndentedTextWriter, constructed with
// a StreamWriter to the source file.
IndentedTextWriter^ tw = gcnew IndentedTextWriter( gcnew StreamWriter( sourceFile,false )," " );
// Generate source code using the code generator.
provider->GenerateCodeFromCompileUnit( compileunit, tw, gcnew CodeGeneratorOptions );
// Close the output file.
tw->Close();
}
static CompilerResults^ CompileCode( CodeDomProvider^ provider, String^ sourceFile, String^ exeFile )
{
// Configure a CompilerParameters that links System.dll
// and produces the specified executable file.
array<String^>^referenceAssemblies = {"System.dll"};
CompilerParameters^ cp = gcnew CompilerParameters( referenceAssemblies,exeFile,false );
// Generate an executable rather than a DLL file.
cp->GenerateExecutable = true;
// Invoke compilation.
CompilerResults^ cr = provider->CompileAssemblyFromFile( cp, sourceFile );
// Return the results of compilation.
return cr;
}
};
public ref class CodeDomExampleForm: public System::Windows::Forms::Form
{
private:
static System::Windows::Forms::Button^ run_button = gcnew System::Windows::Forms::Button;
static System::Windows::Forms::Button^ compile_button = gcnew System::Windows::Forms::Button;
static System::Windows::Forms::Button^ generate_button = gcnew System::Windows::Forms::Button;
static System::Windows::Forms::TextBox^ textBox1 = gcnew System::Windows::Forms::TextBox;
static System::Windows::Forms::ComboBox^ comboBox1 = gcnew System::Windows::Forms::ComboBox;
static System::Windows::Forms::Label^ label1 = gcnew System::Windows::Forms::Label;
void generate_button_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
CodeDomProvider^ provider = GetCurrentProvider();
CodeDomExample::GenerateCode( provider, CodeDomExample::BuildHelloWorldGraph() );
// Build the source file name with the appropriate
// language extension.
String^ sourceFile;
if ( provider->FileExtension->StartsWith( "." ) )
{
sourceFile = String::Concat( "TestGraph", provider->FileExtension );
}
else
{
sourceFile = String::Concat( "TestGraph.", provider->FileExtension );
}
// Read in the generated source file and
// display the source text.
StreamReader^ sr = gcnew StreamReader( sourceFile );
textBox1->Text = sr->ReadToEnd();
sr->Close();
}
CodeDomProvider^ GetCurrentProvider()
{
CodeDomProvider^ provider;
if ( String::Compare( dynamic_cast<String^>(this->comboBox1->SelectedItem), "CSharp" ) == 0 )
provider = CodeDomProvider::CreateProvider("CSharp");
else
if ( String::Compare( dynamic_cast<String^>(this->comboBox1->SelectedItem), "Visual Basic" ) == 0 )
provider = CodeDomProvider::CreateProvider("VisualBasic");
else
if ( String::Compare( dynamic_cast<String^>(this->comboBox1->SelectedItem), "JScript" ) == 0 )
provider = CodeDomProvider::CreateProvider("JScript");
else
provider = CodeDomProvider::CreateProvider("CSharp");
return provider;
}
void compile_button_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
CodeDomProvider^ provider = GetCurrentProvider();
// Build the source file name with the appropriate
// language extension.
String^ sourceFile = String::Concat( "TestGraph.", provider->FileExtension );
// Compile the source file into an executable output file.
CompilerResults^ cr = CodeDomExample::CompileCode( provider, sourceFile, "TestGraph.exe" );
if ( cr->Errors->Count > 0 )
{
// Display compilation errors.
textBox1->Text = String::Concat( "Errors encountered while building ", sourceFile, " into ", cr->PathToAssembly, ": \r\n\n" );
System::CodeDom::Compiler::CompilerError^ ce;
for ( int i = 0; i < cr->Errors->Count; i++ )
{
ce = cr->Errors[i];
textBox1->AppendText( String::Concat( ce->ToString(), "\r\n" ) );
}
run_button->Enabled = false;
}
else
{
textBox1->Text = String::Concat( "Source ", sourceFile, " built into ", cr->PathToAssembly, " with no errors." );
run_button->Enabled = true;
}
}
void run_button_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
Process::Start( "TestGraph.exe" );
}
public:
CodeDomExampleForm()
{
this->SuspendLayout();
// Set properties for label1.
this->label1->Location = System::Drawing::Point( 395, 20 );
this->label1->Size = System::Drawing::Size( 180, 22 );
this->label1->Text = "Select a programming language:";
// Set properties for comboBox1.
this->comboBox1->Location = System::Drawing::Point( 560, 16 );
this->comboBox1->Size = System::Drawing::Size( 190, 23 );
this->comboBox1->Name = "comboBox1";
array<String^>^temp1 = {"CSharp","Visual Basic","JScript"};
this->comboBox1->Items->AddRange( temp1 );
this->comboBox1->Anchor = (System::Windows::Forms::AnchorStyles)(System::Windows::Forms::AnchorStyles::Left | System::Windows::Forms::AnchorStyles::Right | System::Windows::Forms::AnchorStyles::Top);
this->comboBox1->SelectedIndex = 0;
// Set properties for generate_button.
this->generate_button->Location = System::Drawing::Point( 8, 16 );
this->generate_button->Name = "generate_button";
this->generate_button->Size = System::Drawing::Size( 120, 23 );
this->generate_button->Text = "Generate Code";
this->generate_button->Click += gcnew System::EventHandler( this, &CodeDomExampleForm::generate_button_Click );
// Set properties for compile_button.
this->compile_button->Location = System::Drawing::Point( 136, 16 );
this->compile_button->Name = "compile_button";
this->compile_button->Size = System::Drawing::Size( 120, 23 );
this->compile_button->Text = "Compile";
this->compile_button->Click += gcnew System::EventHandler( this, &CodeDomExampleForm::compile_button_Click );
// Set properties for run_button.
this->run_button->Enabled = false;
this->run_button->Location = System::Drawing::Point( 264, 16 );
this->run_button->Name = "run_button";
this->run_button->Size = System::Drawing::Size( 120, 23 );
this->run_button->Text = "Run";
this->run_button->Click += gcnew System::EventHandler( this, &CodeDomExampleForm::run_button_Click );
// Set properties for textBox1.
this->textBox1->Anchor = (System::Windows::Forms::AnchorStyles)(System::Windows::Forms::AnchorStyles::Top | System::Windows::Forms::AnchorStyles::Bottom | System::Windows::Forms::AnchorStyles::Left | System::Windows::Forms::AnchorStyles::Right);
this->textBox1->Location = System::Drawing::Point( 8, 48 );
this->textBox1->Multiline = true;
this->textBox1->ScrollBars = System::Windows::Forms::ScrollBars::Vertical;
this->textBox1->Name = "textBox1";
this->textBox1->Size = System::Drawing::Size( 744, 280 );
this->textBox1->Text = "";
// Set properties for the CodeDomExampleForm.
this->AutoScaleBaseSize = System::Drawing::Size( 5, 13 );
this->ClientSize = System::Drawing::Size( 768, 340 );
this->MinimumSize = System::Drawing::Size( 750, 340 );
array<System::Windows::Forms::Control^>^myControl = {this->textBox1,this->run_button,this->compile_button,this->generate_button,this->comboBox1,this->label1};
this->Controls->AddRange( myControl );
this->Name = "CodeDomExampleForm";
this->Text = "CodeDom Hello World Example";
this->ResumeLayout( false );
}
public:
~CodeDomExampleForm()
{
}
};
}
[STAThread]
int main()
{
Application::Run( gcnew CodeDOMExample::CodeDomExampleForm );
}
using System;
using System.CodeDom;
using System.CodeDom.Compiler;
using System.Collections;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Windows.Forms;
using Microsoft.CSharp;
using Microsoft.VisualBasic;
using Microsoft.JScript;
// This example demonstrates building a Hello World program graph
// using System.CodeDom elements. It calls code generator and
// code compiler methods to build the program using CSharp, VB, or
// JScript. A Windows Forms interface is included. Note: Code
// must be compiled and linked with the Microsoft.JScript assembly.
namespace CodeDOMExample
{
class CodeDomExample
{
// Build a Hello World program graph using
// System.CodeDom types.
public static CodeCompileUnit BuildHelloWorldGraph()
{
// Create a new CodeCompileUnit to contain
// the program graph.
CodeCompileUnit compileUnit = new CodeCompileUnit();
// Declare a new namespace called Samples.
CodeNamespace samples = new CodeNamespace("Samples");
// Add the new namespace to the compile unit.
compileUnit.Namespaces.Add(samples);
// Add the new namespace import for the System namespace.
samples.Imports.Add(new CodeNamespaceImport("System"));
// Declare a new type called Class1.
CodeTypeDeclaration class1 = new CodeTypeDeclaration("Class1");
// Add the new type to the namespace type collection.
samples.Types.Add(class1);
// Declare a new code entry point method.
CodeEntryPointMethod start = new CodeEntryPointMethod();
// Create a type reference for the System.Console class.
CodeTypeReferenceExpression csSystemConsoleType = new CodeTypeReferenceExpression("System.Console");
// Build a Console.WriteLine statement.
CodeMethodInvokeExpression cs1 = new CodeMethodInvokeExpression(
csSystemConsoleType, "WriteLine",
new CodePrimitiveExpression("Hello World!"));
// Add the WriteLine call to the statement collection.
start.Statements.Add(cs1);
// Build another Console.WriteLine statement.
CodeMethodInvokeExpression cs2 = new CodeMethodInvokeExpression(
csSystemConsoleType, "WriteLine",
new CodePrimitiveExpression("Press the Enter key to continue."));
// Add the WriteLine call to the statement collection.
start.Statements.Add(cs2);
// Build a call to System.Console.ReadLine.
CodeMethodInvokeExpression csReadLine = new CodeMethodInvokeExpression(
csSystemConsoleType, "ReadLine");
// Add the ReadLine statement.
start.Statements.Add(csReadLine);
// Add the code entry point method to
// the Members collection of the type.
class1.Members.Add(start);
return compileUnit;
}
public static void GenerateCode(CodeDomProvider provider,
CodeCompileUnit compileunit)
{
// Build the source file name with the appropriate
// language extension.
String sourceFile;
if (provider.FileExtension[0] == '.')
{
sourceFile = "TestGraph" + provider.FileExtension;
}
else
{
sourceFile = "TestGraph." + provider.FileExtension;
}
// Create an IndentedTextWriter, constructed with
// a StreamWriter to the source file.
IndentedTextWriter tw = new IndentedTextWriter(new StreamWriter(sourceFile, false), " ");
// Generate source code using the code generator.
provider.GenerateCodeFromCompileUnit(compileunit, tw, new CodeGeneratorOptions());
// Close the output file.
tw.Close();
}
public static CompilerResults CompileCode(CodeDomProvider provider,
String sourceFile,
String exeFile)
{
// Configure a CompilerParameters that links System.dll
// and produces the specified executable file.
String[] referenceAssemblies = { "System.dll" };
CompilerParameters cp = new CompilerParameters(referenceAssemblies,
exeFile, false);
// Generate an executable rather than a DLL file.
cp.GenerateExecutable = true;
// Invoke compilation.
CompilerResults cr = provider.CompileAssemblyFromFile(cp, sourceFile);
// Return the results of compilation.
return cr;
}
}
public class CodeDomExampleForm : System.Windows.Forms.Form
{
private System.Windows.Forms.Button run_button = new System.Windows.Forms.Button();
private System.Windows.Forms.Button compile_button = new System.Windows.Forms.Button();
private System.Windows.Forms.Button generate_button = new System.Windows.Forms.Button();
private System.Windows.Forms.TextBox textBox1 = new System.Windows.Forms.TextBox();
private System.Windows.Forms.ComboBox comboBox1 = new System.Windows.Forms.ComboBox();
private System.Windows.Forms.Label label1 = new System.Windows.Forms.Label();
private void generate_button_Click(object sender, System.EventArgs e)
{
CodeDomProvider provider = GetCurrentProvider();
CodeDomExample.GenerateCode(provider, CodeDomExample.BuildHelloWorldGraph());
// Build the source file name with the appropriate
// language extension.
String sourceFile;
if (provider.FileExtension[0] == '.')
{
sourceFile = "TestGraph" + provider.FileExtension;
}
else
{
sourceFile = "TestGraph." + provider.FileExtension;
}
// Read in the generated source file and
// display the source text.
StreamReader sr = new StreamReader(sourceFile);
textBox1.Text = sr.ReadToEnd();
sr.Close();
}
private void compile_button_Click(object sender, System.EventArgs e)
{
CodeDomProvider provider = GetCurrentProvider();
// Build the source file name with the appropriate
// language extension.
String sourceFile;
if (provider.FileExtension[0] == '.')
{
sourceFile = "TestGraph" + provider.FileExtension;
}
else
{
sourceFile = "TestGraph." + provider.FileExtension;
}
// Compile the source file into an executable output file.
CompilerResults cr = CodeDomExample.CompileCode(provider,
sourceFile,
"TestGraph.exe");
if (cr.Errors.Count > 0)
{
// Display compilation errors.
textBox1.Text = "Errors encountered while building " +
sourceFile + " into " + cr.PathToAssembly + ": \r\n\n";
foreach (CompilerError ce in cr.Errors)
textBox1.AppendText(ce.ToString() + "\r\n");
run_button.Enabled = false;
}
else
{
textBox1.Text = "Source " + sourceFile + " built into " +
cr.PathToAssembly + " with no errors.";
run_button.Enabled = true;
}
}
private void run_button_Click(object sender,
System.EventArgs e)
{
Process.Start("TestGraph.exe");
}
private CodeDomProvider GetCurrentProvider()
{
CodeDomProvider provider;
switch ((string)this.comboBox1.SelectedItem)
{
case "CSharp":
provider = CodeDomProvider.CreateProvider("CSharp");
break;
case "Visual Basic":
provider = CodeDomProvider.CreateProvider("VisualBasic");
break;
case "JScript":
provider = CodeDomProvider.CreateProvider("JScript");
break;
default:
provider = CodeDomProvider.CreateProvider("CSharp");
break;
}
return provider;
}
public CodeDomExampleForm()
{
this.SuspendLayout();
// Set properties for label1
this.label1.Location = new System.Drawing.Point(395, 20);
this.label1.Size = new Size(180, 22);
this.label1.Text = "Select a programming language:";
// Set properties for comboBox1
this.comboBox1.Location = new System.Drawing.Point(560, 16);
this.comboBox1.Size = new Size(190, 23);
this.comboBox1.Name = "comboBox1";
this.comboBox1.Items.AddRange(new string[] { "CSharp", "Visual Basic", "JScript" });
this.comboBox1.Anchor = System.Windows.Forms.AnchorStyles.Left
| System.Windows.Forms.AnchorStyles.Right
| System.Windows.Forms.AnchorStyles.Top;
this.comboBox1.SelectedIndex = 0;
// Set properties for generate_button.
this.generate_button.Location = new System.Drawing.Point(8, 16);
this.generate_button.Name = "generate_button";
this.generate_button.Size = new System.Drawing.Size(120, 23);
this.generate_button.Text = "Generate Code";
this.generate_button.Click += new System.EventHandler(this.generate_button_Click);
// Set properties for compile_button.
this.compile_button.Location = new System.Drawing.Point(136, 16);
this.compile_button.Name = "compile_button";
this.compile_button.Size = new System.Drawing.Size(120, 23);
this.compile_button.Text = "Compile";
this.compile_button.Click += new System.EventHandler(this.compile_button_Click);
// Set properties for run_button.
this.run_button.Enabled = false;
this.run_button.Location = new System.Drawing.Point(264, 16);
this.run_button.Name = "run_button";
this.run_button.Size = new System.Drawing.Size(120, 23);
this.run_button.Text = "Run";
this.run_button.Click += new System.EventHandler(this.run_button_Click);
// Set properties for textBox1.
this.textBox1.Anchor = (System.Windows.Forms.AnchorStyles.Top
| System.Windows.Forms.AnchorStyles.Bottom
| System.Windows.Forms.AnchorStyles.Left
| System.Windows.Forms.AnchorStyles.Right);
this.textBox1.Location = new System.Drawing.Point(8, 48);
this.textBox1.Multiline = true;
this.textBox1.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(744, 280);
this.textBox1.Text = "";
// Set properties for the CodeDomExampleForm.
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(768, 340);
this.MinimumSize = new System.Drawing.Size(750, 340);
this.Controls.AddRange(new System.Windows.Forms.Control[] {this.textBox1,
this.run_button, this.compile_button, this.generate_button,
this.comboBox1, this.label1 });
this.Name = "CodeDomExampleForm";
this.Text = "CodeDom Hello World Example";
this.ResumeLayout(false);
}
protected override void Dispose(bool disposing)
{
base.Dispose(disposing);
}
[STAThread]
static void Main()
{
Application.Run(new CodeDomExampleForm());
}
}
}
Imports System.CodeDom
Imports System.CodeDom.Compiler
Imports System.Collections
Imports System.ComponentModel
Imports System.Diagnostics
Imports System.Drawing
Imports System.IO
Imports System.Windows.Forms
Imports Microsoft.CSharp
Imports Microsoft.JScript
' This example demonstrates building a Hello World program graph
' using System.CodeDom elements. It calls code generator and
' code compiler methods to build the program using CSharp, VB, or
' JScript. A Windows Forms interface is included. Note: Code
' must be compiled and linked with the Microsoft.JScript assembly.
Namespace CodeDOMExample
Class CodeDomExample
' Build a Hello World program graph using
' System.CodeDom types.
Public Shared Function BuildHelloWorldGraph() As CodeCompileUnit
' Create a new CodeCompileUnit to contain
' the program graph.
Dim compileUnit As New CodeCompileUnit()
' Declare a new namespace called Samples.
Dim samples As New CodeNamespace("Samples")
' Add the new namespace to the compile unit.
compileUnit.Namespaces.Add(samples)
' Add the new namespace import for the System namespace.
samples.Imports.Add(New CodeNamespaceImport("System"))
' Declare a new type called Class1.
Dim class1 As New CodeTypeDeclaration("Class1")
' Add the new type to the namespace type collection.
samples.Types.Add(class1)
' Declare a new code entry point method.
Dim start As New CodeEntryPointMethod()
' Create a type reference for the System.Console class.
Dim csSystemConsoleType As New CodeTypeReferenceExpression( _
"System.Console")
' Build a Console.WriteLine statement.
Dim cs1 As New CodeMethodInvokeExpression( _
csSystemConsoleType, "WriteLine", _
New CodePrimitiveExpression("Hello World!"))
' Add the WriteLine call to the statement collection.
start.Statements.Add(cs1)
' Build another Console.WriteLine statement.
Dim cs2 As New CodeMethodInvokeExpression( _
csSystemConsoleType, "WriteLine", _
New CodePrimitiveExpression("Press the Enter key to continue."))
' Add the WriteLine call to the statement collection.
start.Statements.Add(cs2)
' Build a call to System.Console.ReadLine.
Dim csReadLine As New CodeMethodInvokeExpression( _
csSystemConsoleType, "ReadLine")
' Add the ReadLine statement.
start.Statements.Add(csReadLine)
' Add the code entry point method to
' the Members collection of the type.
class1.Members.Add(start)
Return compileUnit
End Function
Public Shared Sub GenerateCode(ByVal provider As CodeDomProvider, ByVal compileunit As CodeCompileUnit)
' Build the source file name with the appropriate
' language extension.
Dim sourceFile As String
If provider.FileExtension.StartsWith(".") Then
sourceFile = "TestGraph" + provider.FileExtension
Else
sourceFile = "TestGraph." + provider.FileExtension
End If
' Create an IndentedTextWriter, constructed with
' a StreamWriter to the source file.
Dim tw As New IndentedTextWriter(New StreamWriter(sourceFile, False), " ")
' Generate source code using the code generator.
provider.GenerateCodeFromCompileUnit(compileunit, tw, New CodeGeneratorOptions())
' Close the output file.
tw.Close()
End Sub
Public Shared Function CompileCode(ByVal provider As CodeDomProvider, _
ByVal sourceFile As String, _
ByVal exeFile As String) As CompilerResults
' Configure a CompilerParameters that links System.dll
' and produces the specified executable file.
Dim referenceAssemblies As String() = {"System.dll"}
Dim cp As New CompilerParameters(referenceAssemblies, exeFile, False)
' Generate an executable rather than a DLL file.
cp.GenerateExecutable = True
' Invoke compilation.
Dim cr As CompilerResults = provider.CompileAssemblyFromFile(cp, _
sourceFile)
' Return the results of compilation.
Return cr
End Function
End Class
Public Class CodeDomExampleForm
Inherits System.Windows.Forms.Form
Private run_button As New System.Windows.Forms.Button()
Private compile_button As New System.Windows.Forms.Button()
Private generate_button As New System.Windows.Forms.Button()
Private textBox1 As New System.Windows.Forms.TextBox()
Private comboBox1 As New System.Windows.Forms.ComboBox()
Private label1 As New System.Windows.Forms.Label()
Private Sub generate_button_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim provider As CodeDomProvider = GetCurrentProvider()
CodeDomExample.GenerateCode(provider, CodeDomExample.BuildHelloWorldGraph())
' Build the source file name with the appropriate
' language extension.
Dim sourceFile As String
If provider.FileExtension.StartsWith(".") Then
sourceFile = "TestGraph" + provider.FileExtension
Else
sourceFile = "TestGraph." + provider.FileExtension
End If
' Read in the generated source file and
' display the source text.
Dim sr As New StreamReader(sourceFile)
textBox1.Text = sr.ReadToEnd()
sr.Close()
End Sub
Private Sub compile_button_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim provider As CodeDomProvider = GetCurrentProvider()
' Build the source file name with the appropriate
' language extension.
Dim sourceFile As String
If provider.FileExtension.StartsWith(".") Then
sourceFile = "TestGraph" + provider.FileExtension
Else
sourceFile = "TestGraph." + provider.FileExtension
End If
Dim cr As CompilerResults = CodeDomExample.CompileCode(provider, _
sourceFile, _
"TestGraph.EXE")
If cr.Errors.Count > 0 Then
' Display compilation errors.
textBox1.Text = "Errors encountered while building " + _
sourceFile + " into " + _
cr.PathToAssembly + ": " + ControlChars.CrLf
Dim ce As System.CodeDom.Compiler.CompilerError
For Each ce In cr.Errors
textBox1.AppendText(ce.ToString() + ControlChars.CrLf)
Next ce
run_button.Enabled = False
Else
textBox1.Text = "Source " + sourceFile + " built into " + _
cr.PathToAssembly + " with no errors."
run_button.Enabled = True
End If
End Sub
Private Sub run_button_Click(ByVal sender As Object, _
ByVal e As System.EventArgs)
Process.Start("TestGraph.EXE")
End Sub
Private Function GetCurrentProvider() As CodeDomProvider
Dim provider As CodeDomProvider
Select Case CStr(Me.comboBox1.SelectedItem)
Case "CSharp"
provider = CodeDomProvider.CreateProvider("CSharp")
Case "Visual Basic"
provider = CodeDomProvider.CreateProvider("VisualBasic")
Case "JScript"
provider = CodeDomProvider.CreateProvider("JScript")
Case Else
provider = CodeDomProvider.CreateProvider("CSharp")
End Select
Return provider
End Function
Public Sub New()
Me.SuspendLayout()
' Set properties for label1.
Me.label1.Location = New System.Drawing.Point(395, 20)
Me.label1.Size = New Size(180, 22)
Me.label1.Text = "Select a programming language:"
' Set properties for comboBox1.
Me.comboBox1.Location = New System.Drawing.Point(560, 16)
Me.comboBox1.Size = New Size(190, 23)
Me.comboBox1.Name = "comboBox1"
Me.comboBox1.Items.AddRange(New String() {"CSharp", "Visual Basic", "JScript"})
Me.comboBox1.Anchor = System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right Or System.Windows.Forms.AnchorStyles.Top
Me.comboBox1.SelectedIndex = 0
' Set properties for generate_button.
Me.generate_button.Location = New System.Drawing.Point(8, 16)
Me.generate_button.Name = "generate_button"
Me.generate_button.Size = New System.Drawing.Size(120, 23)
Me.generate_button.Text = "Generate Code"
AddHandler generate_button.Click, AddressOf Me.generate_button_Click
' Set properties for compile_button.
Me.compile_button.Location = New System.Drawing.Point(136, 16)
Me.compile_button.Name = "compile_button"
Me.compile_button.Size = New System.Drawing.Size(120, 23)
Me.compile_button.Text = "Compile"
AddHandler compile_button.Click, AddressOf Me.compile_button_Click
' Set properties for run_button.
Me.run_button.Enabled = False
Me.run_button.Location = New System.Drawing.Point(264, 16)
Me.run_button.Name = "run_button"
Me.run_button.Size = New System.Drawing.Size(120, 23)
Me.run_button.Text = "Run"
AddHandler run_button.Click, AddressOf Me.run_button_Click
' Set properties for textBox1.
Me.textBox1.Anchor = System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right
Me.textBox1.Location = New System.Drawing.Point(8, 48)
Me.textBox1.Multiline = True
Me.textBox1.ScrollBars = System.Windows.Forms.ScrollBars.Vertical
Me.textBox1.Name = "textBox1"
Me.textBox1.Size = New System.Drawing.Size(744, 280)
Me.textBox1.Text = ""
' Set properties for the CodeDomExampleForm.
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(768, 340)
Me.MinimumSize = New System.Drawing.Size(750, 340)
Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.textBox1, _
Me.run_button, Me.compile_button, Me.generate_button, _
Me.comboBox1, Me.label1})
Me.Name = "CodeDomExampleForm"
Me.Text = "CodeDom Hello World Example"
Me.ResumeLayout(False)
End Sub
Protected Overloads Sub Dispose(ByVal disposing As Boolean)
MyBase.Dispose(disposing)
End Sub
<STAThread()> _
Shared Sub Main()
Application.Run(New CodeDomExampleForm())
End Sub
End Class
End Namespace
注解
CodeDomProvider可用于创建和检索代码生成器和代码编译器的实例。 代码生成器可用于以特定的语言生成代码，而代码编译器可用于将代码编译为程序集。
注意
在 .NET Framework 2.0 中，代码生成器和代码编译器中提供的方法可直接从代码提供程序获取。 无需调用 CreateGenerator 或 CreateCompiler 来访问方法，并且这些方法被标记为已过时。 这适用于预先存在的以及新的代码提供程序实现。
CodeDomProvider实现通常提供代码生成和/或代码编译接口，用于生成代码和管理单个编程语言的编译。 Windows SDK 附带的实现支持 CodeDomProvider 多种语言。 这些语言包括 C#、Visual Basic、C++ 和 JScript。 开发人员或编译器供应商可以实现 ICodeGenerator 和 ICodeCompiler 接口，并提供将 CodeDomProvider CodeDOM 支持扩展到其他编程语言的 。
计算机配置文件中的 system.codedom> 元素 (Machine.config) 为开发人员和编译器供应商提供了一种机制，用于为其他实现添加配置设置。<CodeDomProvider
类 CodeDomProvider 提供静态方法来发现和枚举 CodeDomProvider 计算机上的实现。 方法 GetAllCompilerInfo 返回计算机上所有 CodeDomProvider 实现的设置。 方法 GetCompilerInfo 根据编程语言名称返回特定 CodeDomProvider 实现的设置。 方法 CreateProvider 返回特定语言的 CodeDomProvider 实现实例。
有关配置文件中语言提供程序设置的详细信息，请参阅 编译器和语言提供程序设置架构。
注意
此类在类级别发出链接需求和继承需求。 SecurityException如果直接调用方或派生类没有完全信任权限，则会引发 。 有关安全要求的详细信息，请参阅 链接需求 和 继承要求。
实施者说明
在 .NET Framework 版本 1.0 和 1.1 中，代码提供程序由 、、 ICodeGeneratorICodeParser和 ICodeCompiler的CodeDomProvider实现组成。 在 .NET Framework 2.0 中CreateGenerator()，、 CreateParser()和 CreateCompiler() 方法已过时，和 ICodeCompiler 的方法ICodeGenerator在 类中CodeDomProvider直接可用。 应在代码提供程序实现中重写这些方法，而不是调用基方法。
构造函数
| CodeDomProvider() |
初始化 CodeDomProvider 类的新实例。 |
属性
| CanRaiseEvents |
获取一个指示组件是否可以引发事件的值。 (继承自 Component) |
| Container |
获取包含 IContainer 的 Component。 (继承自 Component) |
| DesignMode |
获取一个值，用以指示 Component 当前是否处于设计模式。 (继承自 Component) |
| Events |
获取附加到此 Component 的事件处理程序的列表。 (继承自 Component) |
| FileExtension |
获取用于当前语言的源代码文件的默认文件扩展名。 |
| LanguageOptions |
获取语言功能标识符。 |
| Site | (继承自 Component) |
方法
事件
| Disposed |
在通过调用 Dispose() 方法释放组件时发生。 (继承自 Component) |
