最近作一個.NETCore項目,須要調用之前用VB6寫的老程序,本來想重寫,但因爲其調用了大量32DLL,重寫後還須要編譯爲32位才能運行,因而乾脆把老代碼整個封裝爲32DLL,而後準備在64位程序中調用。(注意Windows系統中,先要把DLL註冊爲COM)ui
爲了實現64位程序調用32DLL,我嘗試了大量方法,但效果都不是很理想,偶然中發現.NetCore的「管道」,能夠完美地解決這個問題,具體思路以下:blog
一、建立一個.NETFramework32位程序,在其中對封裝的老代碼進行引用(COM中引用),而後將其接口暴露接口
二、建立64位.NETCore程序,在其啓動時,爲第一步建立的程序建立進程,並啓動進程
三、使用「雙工管道」讓64位程序與32程序進行通訊,完美實現64位程序調用32DLLip
下邊代碼展現一個簡單的管道通訊過程:input
A、64程序代碼string
static void Main(string[] args) { //建立refpropPipe進程 Process process = new Process(); //將refpropPipe.exe放在與refprop64Hv相同路徑下,相對路徑引用 process.StartInfo.FileName = @"C:\Users\Administrator\source\repos\refpropPipe\refpropPipe\bin\Debug\refpropPipe.exe"; //process.StartInfo.FileName = "refpropPipe.exe"; process.Start(); double value = 0; //向refpropPipe發送調用信息,即查詢輸入變量值 using (NamedPipeClientStream pipeClientStream = new NamedPipeClientStream("request")) { pipeClientStream.Connect(); string input = Method + "," + FluidName + "," + InpCode + "," + Units + "," + Prop1 + "," + Prop2; using (StreamWriter writer = new StreamWriter(pipeClientStream)) { writer.WriteAsync(input); } } //接收refpropPipe返回的信息,即查詢結果 using (NamedPipeClientStream pipeClientStream = new NamedPipeClientStream("respose")) { pipeClientStream.Connect(); using (StreamReader reader = new StreamReader(pipeClientStream)) { string val = reader.ReadToEnd(); value = Convert.ToDouble(val); } } process.WaitForExit(); process.Close(); }
B、32位程序代碼it
static void Main(string[] args) { double respose = 0; ///接收refprop64Hv的輸入信息 using (NamedPipeServerStream pipeStream = new NamedPipeServerStream("request")) { pipeStream.WaitForConnection(); using (StreamReader reader = new StreamReader(pipeStream)) { //此處接收到消息後,對32Dll進行調用 } //向refprop64Hv返回結果 using (NamedPipeServerStream pipeStream = new NamedPipeServerStream("respose")) { pipeStream.WaitForConnection(); using (StreamWriter writer = new StreamWriter(pipeStream)) { string res = respose.ToString(); writer.WriteAsync(res); } }