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Tool/ConfigHelper.cs

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+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Tool
+{
+    public class ConfigHelper
+    {
+        //向配置文件写入内容
+        public void Write(string key, string value)
+        {
+
+            Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
+            if (config.AppSettings.Settings[key] == null)
+            {
+                config.AppSettings.Settings.Add(key, value);
+            }
+            else
+            {
+                config.AppSettings.Settings[key].Value = value;
+            }
+            config.Save(ConfigurationSaveMode.Modified);
+            ConfigurationManager.RefreshSection("appSettings");//   重新加载新的配置文件   
+        }
+        //读取配置文件内容
+        public Dictionary<string, string> ReadAll()
+        {
+            Dictionary<string, string> dic = new Dictionary<string, string>();
+            Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
+            foreach (string key in config.AppSettings.Settings.AllKeys)
+            {
+                dic[key] = config.AppSettings.Settings[key].Value;
+            }
+            return dic;
+        }
+        public Dictionary<string, string> ReadAll(string path)
+        {
+            Dictionary<string, string> dic = new Dictionary<string, string>();
+            ExeConfigurationFileMap map = new ExeConfigurationFileMap
+            {
+                ExeConfigFilename = path
+            };
+            Configuration config = ConfigurationManager.OpenMappedExeConfiguration(map, ConfigurationUserLevel.None);
+            foreach (string key in config.AppSettings.Settings.AllKeys)
+            {
+                dic[key] = config.AppSettings.Settings[key].Value;
+            }
+            return dic;
+        }
+    }
+}