log信息添加

Login.xaml.cs

@@ -17,6 +17,7 @@ using System.Runtime.InteropServices;
 using System.Data.SqlClient;
 using System.Data;
 using System.Security.Policy;
+using System.IO;
 
 namespace formula_manage
 {
@@ -24,11 +25,32 @@ namespace formula_manage
     /// Login.xaml 的交互逻辑
     /// </summary>
     public partial class Login : Window
-    {       
+    {
+
+        string logpath = System.Environment.CurrentDirectory + "\\Log";//日志文件目录
+        string logPath = "" + System.Environment.CurrentDirectory + "\\Log\\Log.txt";//日志文件
+        string Log_time = "[" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "]：";
+
         public Login()
         {
             WindowStartupLocation = WindowStartupLocation.CenterScreen;
             InitializeComponent();
+
+            System.IO.DirectoryInfo log = new System.IO.DirectoryInfo(@logpath);//生成日志文件目录
+            if (!File.Exists(logPath))//检查日志文件并写入启动日志
+            {
+                FileStream fs = new FileStream(logPath, FileMode.CreateNew, FileAccess.Write);//创建写入文件 
+                StreamWriter wr = new StreamWriter(fs);//创建文件
+                wr.WriteLine(Log_time + "FORMULA_start");
+                wr.Close();
+            }
+            else
+            {
+                FileStream fs = new FileStream(logPath, FileMode.Append, FileAccess.Write);
+                StreamWriter wr = new StreamWriter(fs);//创建文件
+                wr.WriteLine(Log_time + "FORMULA_start");
+                wr.Close();
+            }
         }
 
         private void Button_Click(object sender, RoutedEventArgs e)  //退出按钮事件