C# Codedom和字符串处理_C#_Vb.net_String_Codedom

C# Codedom和字符串处理

c# vb.net string

C# Codedom和字符串处理,c#,vb.net,string,codedom,C#,Vb.net,String,Codedom,我对此进行了研究，但没有找到任何可靠的证据，我想看看是否有人能为我指明正确的方向。我想看看Codedom是否可以处理不同语言之间的字符串和关联，而不必为每种语言设置条件字符串例如，我需要通过Codedom在C#和VB.NET中生成如下内容： C# VB.NET errorMsg = errorMsg.Replace(""""c, "'"c).Replace(ChrW(13) & ChrW(10), "\n") System.Windows.Browser.HtmlPage.Window

我对此进行了研究，但没有找到任何可靠的证据，我想看看是否有人能为我指明正确的方向。我想看看Codedom是否可以处理不同语言之间的字符串和关联，而不必为每种语言设置条件字符串

例如，我需要通过Codedom在C#和VB.NET中生成如下内容：

VB.NET

errorMsg = errorMsg.Replace(""""c, "'"c).Replace(ChrW(13) & ChrW(10), "\n")
System.Windows.Browser.HtmlPage.Window.Eval("throw new Error(""Unhandled Error in Silverlight Application " + errorMsg + """);")

errorMsg.Replace

和

System.Windows.Browser.HtmlPage.Window.Eval的CodeMethodInvokeeExpression
非常简单，我无法确定Codedom是否可以自动处理其中的字符串。
更新：
我刚刚尝试了以下代码：
VBCodeProvider vbProvider = new VBCodeProvider();
CSharpCodeProvider csProvider = new CSharpCodeProvider();

var errorMessagePart1 = new CodePrimitiveExpression("Unhandled Error in Silverlight Application \"");
var errorMessagePart2 = new CodeVariableReferenceExpression("errorMsg");
var errorMessagePart3 = new CodePrimitiveExpression("\"");
var errorMessage = new CodeBinaryOperatorExpression(new CodeBinaryOperatorExpression(errorMessagePart1, CodeBinaryOperatorType.Add, errorMessagePart2), CodeBinaryOperatorType.Add, errorMessagePart3);
var expression = new CodeThrowExceptionStatement(new CodeObjectCreateExpression("Error", errorMessage));

StringWriter writer = new StringWriter();
vbProvider.GenerateCodeFromStatement(expression, writer, new CodeGeneratorOptions());
string vb = writer.ToString();
writer = new StringWriter();
csProvider.GenerateCodeFromStatement(expression, writer, new CodeGeneratorOptions());
string cs = writer.ToString();

Console.WriteLine(vb);
Console.WriteLine(cs);

它打印出：
Throw New [Error]((("Unhandled Error in Silverlight Application """ + errorMsg) _ 
    + """"))

throw new Error((("Unhandled Error in Silverlight Application \"" + errorMsg)
    + "\""));

在我看来，这就像是一个VB版本和一个C#版本。对于伪括号，您可以做的不多，但不应该造成任何伤害。
不幸的是，当代码原语组合在一起时，并不总是产生期望的结果，因为提供程序将有一定的自由来解释意图。解决这个问题的方法是使用一个
下面是代码（VB.NET&C#），用于生成问题中列出的评估语句。请随意使用最适合您的：
VB.NET版本
Imports System.CodeDom
Imports System.CodeDom.Compiler
Imports System.Reflection
Imports System.Text
Imports System.IO
Imports Microsoft.CSharp

Public Class PrintEvalStatement
    Public provider As CodeDomProvider

    Sub New()
        Dim left As New CodePrimitiveExpression("throw new Error(""Unhandled Error in Silverlight Application ")
        Dim middle As New CodeVariableReferenceExpression("errorMsg")
        Dim right As New CodePrimitiveExpression(""");")

        Dim targetObject = New CodeTypeReferenceExpression("System.Windows.Browser.HtmlPage.Window")
        Dim methodName = "Eval"

        provider = New VBCodeProvider()
        Dim vbStatement As String = ConcatStatement(left, middle, right, targetObject, methodName)

        provider = New CSharpCodeProvider()
        Dim csStatement As String = ConcatStatement(left, middle, right, targetObject, methodName)

        Console.WriteLine(vbStatement)
        Console.WriteLine(csStatement)
        Console.ReadLine()
    End Sub

    Private Function ConcatStatement(ByVal left As CodePrimitiveExpression,
                                     ByVal middle As CodeVariableReferenceExpression,
                                     ByVal right As CodePrimitiveExpression,
                                     ByVal targetObject As CodeTypeReferenceExpression,
                                     ByVal methodName As String) As String
        Dim evalMessage As New CodeExpression
        evalMessage = ConcatString(left, middle, right)

        Dim eval As New CodeMethodInvokeExpression(targetObject, methodName, evalMessage)
        Dim evalStatement As New CodeExpressionStatement(eval)
        Dim sw As StringWriter = New StringWriter()

        Using tx As TextWriter = New StringWriter()
            provider.GenerateCodeFromStatement(evalStatement, tx, New CodeGeneratorOptions())
            Return tx.ToString()
        End Using
    End Function
    Private Function ConcatString(ByVal left As CodeExpression,
                                  ByVal middle As CodeExpression,
                                  ByVal right As CodeExpression) As CodeExpression
        Return New CodeSnippetExpression(CodeToString(left) + " + " + CodeToString(middle) + " + " + CodeToString(right))
    End Function
    Private Function CodeToString(ByVal expr As CodeExpression) As String
        Using tx As TextWriter = New StringWriter()
            provider.GenerateCodeFromExpression(expr, tx, New CodeGeneratorOptions())
            Return tx.ToString()
        End Using
    End Function


End Class

using System.CodeDom;
using System.CodeDom.Compiler;
using System.Reflection;
using System.Text;
using System.IO;
using Microsoft.CSharp;
using Microsoft.VisualBasic;

namespace CodeDom
{
    class Program
    {       
        static CodeDomProvider provider;

        static void Main(string[] args)
        {
            Program shell = new Program();
            provider = new VBCodeProvider();
            CodePrimitiveExpression left = new CodePrimitiveExpression("throw new Error(\"Unhandled Error in Silverlight Application\")");
            CodeVariableReferenceExpression middle = new CodeVariableReferenceExpression("errorMsg");
            CodePrimitiveExpression right = new CodePrimitiveExpression("\");");

            CodeTypeReferenceExpression targetObject = new CodeTypeReferenceExpression("System.Windows.Browser.HtmlPage.Window");
            string methodName = "Eval";

            string vbStatement =  shell.ConcatStatement(left, middle, right, targetObject, methodName);

            provider = new CSharpCodeProvider();

            string csStatement = shell.ConcatStatement(left, middle, right, targetObject, methodName);

            Console.WriteLine(vbStatement);
            Console.WriteLine(csStatement);
            Console.ReadLine();

        }

        public string ConcatStatement(CodePrimitiveExpression left, CodeVariableReferenceExpression middle, CodePrimitiveExpression right, CodeTypeReferenceExpression targetObject, string methodName)
        {
            CodeExpression evalMessage = new CodeExpression();
            evalMessage = ConcatString(left, middle, right);

            CodeMethodInvokeExpression eval = new CodeMethodInvokeExpression(targetObject, methodName, evalMessage);
            CodeExpressionStatement evalStatement = new CodeExpressionStatement(eval);
            using (TextWriter tx = new StringWriter())
            {
                provider.GenerateCodeFromStatement(evalStatement, tx, new CodeGeneratorOptions());
                return tx.ToString();
            }
        }

        private CodeExpression ConcatString(CodeExpression left, CodeExpression middle, CodeExpression right) {
            return new CodeSnippetExpression(CodeToString(left) + " + " + CodeToString(middle) + " + " + CodeToString(right));
        }

        private string CodeToString(CodeExpression expr) {
            using (TextWriter tx = new StringWriter()) {
                provider.GenerateCodeFromExpression(expr,tx, new CodeGeneratorOptions());
                return tx.ToString();
            }
        }
    }
}

C#版本
Imports System.CodeDom
Imports System.CodeDom.Compiler
Imports System.Reflection
Imports System.Text
Imports System.IO
Imports Microsoft.CSharp

Public Class PrintEvalStatement
    Public provider As CodeDomProvider

    Sub New()
        Dim left As New CodePrimitiveExpression("throw new Error(""Unhandled Error in Silverlight Application ")
        Dim middle As New CodeVariableReferenceExpression("errorMsg")
        Dim right As New CodePrimitiveExpression(""");")

        Dim targetObject = New CodeTypeReferenceExpression("System.Windows.Browser.HtmlPage.Window")
        Dim methodName = "Eval"

        provider = New VBCodeProvider()
        Dim vbStatement As String = ConcatStatement(left, middle, right, targetObject, methodName)

        provider = New CSharpCodeProvider()
        Dim csStatement As String = ConcatStatement(left, middle, right, targetObject, methodName)

        Console.WriteLine(vbStatement)
        Console.WriteLine(csStatement)
        Console.ReadLine()
    End Sub

    Private Function ConcatStatement(ByVal left As CodePrimitiveExpression,
                                     ByVal middle As CodeVariableReferenceExpression,
                                     ByVal right As CodePrimitiveExpression,
                                     ByVal targetObject As CodeTypeReferenceExpression,
                                     ByVal methodName As String) As String
        Dim evalMessage As New CodeExpression
        evalMessage = ConcatString(left, middle, right)

        Dim eval As New CodeMethodInvokeExpression(targetObject, methodName, evalMessage)
        Dim evalStatement As New CodeExpressionStatement(eval)
        Dim sw As StringWriter = New StringWriter()

        Using tx As TextWriter = New StringWriter()
            provider.GenerateCodeFromStatement(evalStatement, tx, New CodeGeneratorOptions())
            Return tx.ToString()
        End Using
    End Function
    Private Function ConcatString(ByVal left As CodeExpression,
                                  ByVal middle As CodeExpression,
                                  ByVal right As CodeExpression) As CodeExpression
        Return New CodeSnippetExpression(CodeToString(left) + " + " + CodeToString(middle) + " + " + CodeToString(right))
    End Function
    Private Function CodeToString(ByVal expr As CodeExpression) As String
        Using tx As TextWriter = New StringWriter()
            provider.GenerateCodeFromExpression(expr, tx, New CodeGeneratorOptions())
            Return tx.ToString()
        End Using
    End Function


End Class

using System.CodeDom;
using System.CodeDom.Compiler;
using System.Reflection;
using System.Text;
using System.IO;
using Microsoft.CSharp;
using Microsoft.VisualBasic;

namespace CodeDom
{
    class Program
    {       
        static CodeDomProvider provider;

        static void Main(string[] args)
        {
            Program shell = new Program();
            provider = new VBCodeProvider();
            CodePrimitiveExpression left = new CodePrimitiveExpression("throw new Error(\"Unhandled Error in Silverlight Application\")");
            CodeVariableReferenceExpression middle = new CodeVariableReferenceExpression("errorMsg");
            CodePrimitiveExpression right = new CodePrimitiveExpression("\");");

            CodeTypeReferenceExpression targetObject = new CodeTypeReferenceExpression("System.Windows.Browser.HtmlPage.Window");
            string methodName = "Eval";

            string vbStatement =  shell.ConcatStatement(left, middle, right, targetObject, methodName);

            provider = new CSharpCodeProvider();

            string csStatement = shell.ConcatStatement(left, middle, right, targetObject, methodName);

            Console.WriteLine(vbStatement);
            Console.WriteLine(csStatement);
            Console.ReadLine();

        }

        public string ConcatStatement(CodePrimitiveExpression left, CodeVariableReferenceExpression middle, CodePrimitiveExpression right, CodeTypeReferenceExpression targetObject, string methodName)
        {
            CodeExpression evalMessage = new CodeExpression();
            evalMessage = ConcatString(left, middle, right);

            CodeMethodInvokeExpression eval = new CodeMethodInvokeExpression(targetObject, methodName, evalMessage);
            CodeExpressionStatement evalStatement = new CodeExpressionStatement(eval);
            using (TextWriter tx = new StringWriter())
            {
                provider.GenerateCodeFromStatement(evalStatement, tx, new CodeGeneratorOptions());
                return tx.ToString();
            }
        }

        private CodeExpression ConcatString(CodeExpression left, CodeExpression middle, CodeExpression right) {
            return new CodeSnippetExpression(CodeToString(left) + " + " + CodeToString(middle) + " + " + CodeToString(right));
        }

        private string CodeToString(CodeExpression expr) {
            using (TextWriter tx = new StringWriter()) {
                provider.GenerateCodeFromExpression(expr,tx, new CodeGeneratorOptions());
                return tx.ToString();
            }
        }
    }
}

您可以调用string.Concat而不是使用+运算符，除非您需要完全按照所示生成代码
CodePrimitiveExpression throwstring = new CodePrimitiveExpression("throw new Error(\"Unhandled Error in Silverlight Application ");
CodeVariableReferenceExpression errorMsg = new CodeVariableReferenceExpression("errorMsg");
CodePrimitiveExpression end = new CodePrimitiveExpression("\");");

CodeTypeReferenceExpression targetObject = new CodeTypeReferenceExpression("System.Windows.Browser.HtmlPage.Window");
CodeTypeReferenceExpression str = new CodeTypeReferenceExpression(typeof(string));
CodeMethodInvokeExpression concat = new CodeMethodInvokeExpression(str,"Concat",throwstring,errorMsg,end);
CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression(new CodeMethodReferenceExpression(targetObject, "Eval"), concat);

输出C#：
VB:
类CodeTypeReference
应该可以帮助您（），就像Alison使用的一样。
我不理解您的C#示例。字符串文字在一行中包含两个双引号。这是不合法的。具有讽刺意味的是，你的VB.NET示例，就文字而言，是有效的C#，那么为什么不直接使用它呢？@Kirk Woll:这个示例不是我的，它是微软的。这是在App.xaml.vb或App.xaml.cs中为VS中的新Silverlight项目生成的。它似乎在将错误消息踢到Javascript上。但我不知道MS示例如何编译。你的意思是这样吗？我和柯克·沃尔在这一点上是一致的，我不明白C#怎么能一直编译。你自己试试看。在VS2008或VS2010中创建新的Silverlight项目。请参见App.xaml.cs中的ReportErrorToDOM例程中的上述代码。编译。勇敢的努力，真的很有趣你是怎么做到的。不幸的是，我需要整个字符串，但无法从上面的ode中计算出来。对不起，这并没有多大帮助。如上问题所述，我需要生成这些字符串/语句。我将编辑问题，添加“完全如下图所示”字样。对不起，这不是特别有用。
System.Windows.Browser.HtmlPage.Window.Eval(String.Concat("throw new Error(""Unhandled Error in Silverlight Application ", errorMsg, """);"))