只能运行一个实例

HySoftSMS/FrmMain.Designer.cs

@@ -59,6 +59,7 @@
             this.Controls.Add(this.label1);
             this.Controls.Add(this.rtb1);
             this.Name = "FrmMain";
+            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
             this.Text = "短信发送";
             this.Load += new System.EventHandler(this.FrmMain_Load);
             this.ResumeLayout(false);

HySoftSMS/Program.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.Linq;
 using System.Threading.Tasks;
 using System.Windows.Forms;
@@ -14,9 +15,21 @@ namespace HySoftSMS
         [STAThread]
         static void Main()
         {
-            Application.EnableVisualStyles();
-            Application.SetCompatibleTextRenderingDefault(false);
-            Application.Run(new FrmMain());
+            Process[] ps = Process.GetProcessesByName("HySoftSMS");
+
+            if (ps != null && ps.Length > 1)
+
+            {
+
+                //发现重复进程
+                MessageBox.Show("已经运行了一个实例了。");
+            }
+            else
+            {
+                Application.EnableVisualStyles();
+                Application.SetCompatibleTextRenderingDefault(false);
+                Application.Run(new FrmMain());
+            }
         }
     }
 }

HySoftSMS/bin/x86/Debug/Config.ini

@@ -1,5 +0,0 @@
-[基础设置]
-服务器地址=http://117.158.196.116:8880
-
-[基础设置1]
-服务器地址=http://117.158.196.116:8880