添加超时自动重连的判断

UAS-出货标签管理/PublicMethod/DataHelper.cs

@@ -21,7 +21,7 @@ namespace UAS_LabelMachine
         //富为外网地址
         //private readonly string ConnectionStrings = "Data Source=richwellgroup.com.cn/orcl;User ID=DATACENTER;PassWord=select!#%*(";
         //怡海能达外网地址
-        private readonly string ConnectionStrings = "Data Source=sz.hi-mantech.com/orcl;User ID=DATACENTER;PassWord=select!#%*(";
+        private readonly string ConnectionStrings = "Data Source=sz.hi-mantech.com/orcl;User ID=YHND_SZ;PassWord=select!#%*(";
         //怡海能达内网地址
         //private readonly string ConnectionStrings = "Data Source=192.168.1.200/orcl;User ID=DATACENTER;PassWord=select!#%*(";
         //用户选择的数据库的连接字符串
@@ -29,6 +29,10 @@ namespace UAS_LabelMachine
         static OracleConnection connection = null;
         static OracleCommand command = null;
         /// <summary>
+        /// 重置连接的次数
+        /// </summary>
+        int ReconnectTime = 0;
+        /// <summary>
         /// 执行构造函数的时候打开数据库的链接
         /// </summary>
         public DataHelper()
@@ -98,7 +102,22 @@ namespace UAS_LabelMachine
             command = new OracleCommand(sql, connection);
             OracleDataAdapter ad = new OracleDataAdapter();
             ad.SelectCommand = command;
-            ad.Fill(dt);
+            try
+            {
+                ad.Fill(dt);
+                ReconnectTime = 0;
+            }
+            catch (Exception)
+            {
+                if (ReconnectTime == 0)
+                {
+                    ReconnectTime++;
+                    connection = new OracleConnection(DBConnectionString);
+                    //成功执行后将重复连接数置为0
+                    dt = (DataTable)getFieldDataByCondition(TableName, Field, Condition);
+                }
+            }
+
             if (dt.Rows.Count > 0)
             {
                 ad.Dispose();
@@ -743,6 +762,7 @@ namespace UAS_LabelMachine
             }
         }
 
+      
         /// <summary>
         /// 直接执行SQL，同时传入SQL的类型
         /// </summary>
@@ -790,11 +810,17 @@ namespace UAS_LabelMachine
                         OracleDataAdapter ad = new OracleDataAdapter(command);
                         ad.Fill((DataTable)result);
                         ad.Dispose();
+                        //成功执行后将重复连接数置为0
+                        ReconnectTime = 0;
                     }
                     catch (Exception)
                     {
-                        connection = new OracleConnection(DBConnectionString);
-                        result = ExecuteSql(SQL, Type, names);
+                        if (ReconnectTime == 0)
+                        {
+                            ReconnectTime++;
+                            connection = new OracleConnection(DBConnectionString);
+                            result = ExecuteSql(SQL, Type, names);
+                        }
                     }
                     break;
                 case "DELETE":