1、数据库链接维护：改进去重和相似性判断

Tools/MyUtils/Utils.cs

@@ -64,6 +64,26 @@ namespace Tools.MyUtils
             return DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
         }
 
+        #endregion
+        #region 序号生成
+
+        /// <summary>
+        /// 生成定长序号
+        /// </summary>
+        /// <param name="seed">序号</param>
+        /// <param name="len">长度</param>
+        /// <returns></returns>
+        public static string GenSerialNo(int seed, int len = 2)
+        {
+            string s = seed.ToString();
+            if (s.Length < len)
+            {
+                s = $"0000{seed}";
+                s = s.Substring(s.Length - len);
+            }
+            return s;
+        }
+
         #endregion
         #region 打开文件
 
@@ -142,7 +162,7 @@ namespace Tools.MyUtils
         }
 
         #endregion
-
+        
         #region winform：提示；帮助窗口；异步UI支持
 
         /// <summary>
@@ -153,6 +173,17 @@ namespace Tools.MyUtils
         {
             new wMsgBox().Show(msg, width, height);
         }
+        /// <summary>
+        /// 是否提示
+        /// </summary>
+        /// <param name="msg"></param>
+        /// <returns></returns>
+        public static bool TipYN(string msg)
+        {
+            var result = MessageBox.Show(msg, "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
+            return result == DialogResult.Yes;
+        }
+
         /// <summary>
         /// 显示帮助信息
         /// </summary>
@@ -185,27 +216,7 @@ namespace Tools.MyUtils
         }
 
         #endregion
-        #region 序号生成
-
-        /// <summary>
-        /// 生成定长序号
-        /// </summary>
-        /// <param name="seed">序号</param>
-        /// <param name="len">长度</param>
-        /// <returns></returns>
-        public static string GenSerialNo(int seed, int len = 2)
-        {
-            string s = seed.ToString();
-            if (s.Length < len)
-            {
-                s = $"0000{seed}";
-                s = s.Substring(s.Length - len);
-            }
-            return s;
-        }
-
-        #endregion
-
+        
         #region 数据库链接处理
 
         /// <summary>

Tools/MyUtils/wDbSetting.cs

@@ -171,7 +171,9 @@ namespace Tools.MyUtils
         
     }
 
-
+    /// <summary>
+    /// 数据链接模型
+    /// </summary>
     public class DbItemModel
     {
         public string Link { get; set; }
@@ -183,5 +185,32 @@ namespace Tools.MyUtils
         {
             return $"{this.DbName}({this.Link})";
         }
+
+        public Similarity Compare(string linkString)
+        {
+            var m = Utils.GetDbItemModel(linkString);
+            return this.Compare(m);
+        }
+        public Similarity Compare(DbItemModel m)
+        {
+            if (this.Link != m.Link)
+                return Similarity.Different;
+            if (this.LinkString == m.LinkString)
+                return Similarity.Same;
+            if (this.Link == m.Link && this.DbName == m.DbName)
+                return Similarity.Similar;
+            
+            return Similarity.None;
+        }
+    }
+    /// <summary>
+    /// 相似度
+    /// </summary>
+    public enum Similarity
+    {
+        None,
+        Same,
+        Similar,
+        Different,
     }
 }

Tools/UI/wDbLinkMngr.cs

@@ -60,14 +60,13 @@ namespace Tools.UI
                 Utils.Tip("链接必须输入！");
                 return false;
             }
-            if (this.IsAdd)
-            {
-                this.AddRow();
-            }
-            else
-            {
-                this.EditRow();
-            }
+            //新增状态，若新增失败则返回
+            if (this.IsAdd && !this.AddRow())
+                return false;
+            //编辑状态，若编辑失败则返回
+            if (!this.IsAdd && !this.EditRow())
+                return false;
+
             return base.SaveCheck();
         }
 
@@ -103,39 +102,68 @@ namespace Tools.UI
         /// <summary>
         /// 新增数据
         /// </summary>
-        private void AddRow()
+        private bool AddRow()
         {
             var note = this.tbNote.Text.Trim();
             var link = this.tbLink.Text.Trim();
             //重复判断
-            var isExist = this._db.IsExist($"SELECT COUNT(*) FROM dbo.FTT_DbLinkManager WHERE Note='{note}' AND Link = '{link}'");
-            if (isExist)
+            foreach (DataRowView r in this._ds.Tables[0].DefaultView)
             {
-                Utils.Tip("数据已存在，请勿重复录入！");
-                return;
+                //重复判断
+                var linkNow = r["link"].ToString();
+                var m = Utils.GetDbItemModel(linkNow);
+                var sim = m.Compare(link);
+                if (sim == Similarity.Same)
+                {
+                    Utils.Tip(this.GenMessage("已维护了一个相同链接，请检查！", r, m), 400, 240);
+                    return false;
+                }
+                else if (sim == Similarity.Similar)
+                {
+                    var isPass = Utils.TipYN(this.GenMessage("已维护了一个相似链接！是否继续添加？", r, m));
+                    if (!isPass)
+                        return false;
+                }
             }
             //増行
             var drNew = this._ds.Tables[0].NewRow();
             drNew["Note"] = note;
             drNew["Link"] = link;
             this._ds.Tables[0].Rows.Add(drNew);
+
+            return true;
         }
         /// <summary>
         /// 更新数据
         /// </summary>
-        private void EditRow()
+        private bool EditRow()
         {
             //查找编辑行
             var drEdit = this._ds.Tables[0].Select($"ID={this.EditID}").FirstOrDefault();
             if (this.EditID == 0 || drEdit == null)
             {
                 Utils.Tip("请选择您要编辑的行！");
-                return;
+                return false;
             }
             //编辑赋值
             drEdit["Note"] = this.tbNote.Text;
             drEdit["Link"] = this.tbLink.Text.Trim();
             drEdit.EndEdit();
+
+            return true;
+        }
+
+        /// <summary>
+        /// 生成消息
+        /// </summary>
+        /// <param name="msg"></param>
+        /// <param name="r"></param>
+        /// <param name="m"></param>
+        /// <returns></returns>
+        private string GenMessage(string msg, DataRowView r, DbItemModel m)
+        {
+            var blank = "    ";
+            return $"{msg}\r\n序号：{r["ID"]}\r\n描述：{r["Note"]}\r\n链接：\r\n{blank}IP：{m.Link}\r\n{blank}用户：{m.UserId}\r\n{blank}密码：{m.Pwd}\r\n{blank}数据库：{m.DbName}";
         }
     }
 }