Unity 读取、写入自定义路径文件，调用System.Windows.Forms

调用System.Windows.Forms DLL

首先在Unity新建Plugins文件夹添加System.Windows.Forms.dll

然后代码中添加引用

using System;
using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System.Windows.Forms;
using System.IO;

public class FileMenu : MonoBehaviour
{
    #region Public
    public UIButton BtnNew;
    public UIButton BtnOpen;
    public UIButton BtnSave;
    public UIButton BtnSaveAs;
    public UIButton BtnClose;
    #endregion

    #region private
    
    SaveFileDialog saveLog;
    StreamReader sr;
    StreamWriter sw;
    string strSendTxt;
    UIPaneAuto uiPanelAuto;//一个显示文本和输入文本的文本框所在的类
    #endregion

    void Awake()
    {
        uiPanelAuto = transform.GetComponent<UIPaneAuto>();
        BtnNew = GameObject.Find("UI Root/Camera/PanelTop/LstBtn/BtnNew").GetComponent<UIButton>();
        BtnOpen = GameObject.Find("UI Root/Camera/PanelTop/LstBtn/BtnOpen").GetComponent<UIButton>();
        BtnSave = GameObject.Find("UI Root/Camera/PanelTop/LstBtn/BtnSave").GetComponent<UIButton>();
        BtnSaveAs = GameObject.Find("UI Root/Camera/PanelTop/LstBtn/BtnSaveAs").GetComponent<UIButton>();
        BtnClose = GameObject.Find("UI Root/Camera/PanelTop/LstBtn/BtnClose").GetComponent<UIButton>();
        EventDelegate.Add(BtnNew.onClick, fnNew);
        EventDelegate.Add(BtnOpen.onClick, fnOpen);
        EventDelegate.Add(BtnSave.onClick, fnSave);
        EventDelegate.Add(BtnSaveAs.onClick, fnSave);
        EventDelegate.Add(BtnClose.onClick, fnClose);
    }

    

    void fnNew()
    {
        Debug.Log("New");
        uiPanelAuto.fnSetInputTxt("");
    }

    void fnOpen()
    {
        Debug.Log("Open");
        try
        {
            OpenFileDialog opLog = new OpenFileDialog();
            opLog.InitialDirectory = UnityEngine.Application.dataPath;
            opLog.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";
            DialogResult result = opLog.ShowDialog();
            if (result == DialogResult.OK)
            {
                string path = opLog.FileName;
                Debug.Log(path);
                sr = File.OpenText(path);

                string line;
                BetterList<string> lst = new BetterList<string>();
                strSendTxt = "";
                while ((line = sr.ReadLine()) != null)
                {
                    lst.Add(line);
                }
                foreach (string s in lst)
                {
                    strSendTxt += s+"
";
                }
                uiPanelAuto.fnSetInputTxt(strSendTxt);
                sr.Close();
                sr.Dispose();
            }
        }
        catch(Exception e)
        {
            Debug.Log("打开错误："+e.Message);
            return;
        }
    }

    void fnSave()
    {
            Debug.Log("Save");
            SaveFileDialog saveLog = new SaveFileDialog();
            saveLog.InitialDirectory = UnityEngine.Application.dataPath;
            saveLog.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";
            DialogResult result = saveLog.ShowDialog();
            if (result == DialogResult.OK)
            {
                Debug.Log(saveLog.FileName);
                FileInfo f = new FileInfo(saveLog.FileName);
                if (f.Exists)
                {
                    f.Delete();//如果存在同名文本，就删除它重新建一个
                    f = new FileInfo(saveLog.FileName);
                    sw = f.AppendText();

		    //将LstIptChect中的数据添加到Txt中
                    foreach (string s in uiPanelAuto.lstIptCheck)
                    {
                        Debug.Log(s);
                        sw.WriteLine(s);
                    }
                    sw.Close();
                    sw.Dispose();
                }
                else
                {
                    sw = f.AppendText();
                     foreach (string s in uiPanelAuto.lstIptCheck)
                    {
                        Debug.Log(s);
                        if(s!="")
                        sw.WriteLine(s);
                    }
                    sw.Close();
                    sw.Dispose();
                }
            }
        }
    }

    void fnClose()
    {
        Application.Quit();
    }
}

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