1、增加复制相同列通用方法及非法行判断方法

.gitignore

@@ -4,3 +4,4 @@
 
 /FunnyPick/.vs/FunnyPick/v16/Server/sqlite3
 /FunnyPick/.vs/FunnyPick/v16/.suo
+/FunnyPick/.vs/FunnyPick/DesignTimeBuild/.dtbcache

FunnyPick/FunnyPick/EasyDataTable.cs

 using System;
+using System.Collections.Generic;
 using System.Data;
 using System.Linq;
 
@@ -60,5 +61,55 @@ namespace FunnyPick
 
             // result : "name1,name2,name3"
         }
+
+
+
+        /// <summary>
+        /// 复制相同列
+        /// </summary>
+        /// <param name="dtFrom">源表</param>
+        /// <param name="dtTarget">目标表</param>
+        /// <param name="distinctCol">去重列</param>
+        /// <param name="ExceptColList">去除列(即包含在此列表中的列不复制)</param>
+        public void CopySameCol2Table(DataTable dtFrom, DataTable dtTarget, string distinctCol, List<string> ExceptColList = null)
+        {
+            foreach (DataRow r in dtFrom.Rows)
+            {
+                if (IsIllegalDataRow(r))
+                    continue;
+                //如果去重列不为空，并且两表都包含该列，则取出重复值
+                if (!string.IsNullOrEmpty(distinctCol) && dtFrom.Columns.Contains(distinctCol) && dtTarget.Columns.Contains(distinctCol))
+                {
+                    if (dtTarget.Select($"{distinctCol}='{r[distinctCol]}'").Length > 0)
+                        continue;
+                }
+                //创建目标新行
+                DataRow drNew = dtTarget.NewRow();
+                foreach (DataColumn c in dtFrom.Columns)
+                {
+                    string ColName = c.ColumnName;
+                    //ID和指定忽略的列，不复制
+                    if (ColName.Equals("ID") || ExceptColList?.IndexOf(ColName) >= 0)
+                        continue;
+                    if (dtTarget.Columns.Contains(ColName))
+                    {
+                        drNew[ColName] = r[ColName];
+                    }
+                }
+                drNew.EndEdit();
+                dtTarget.Rows.Add(drNew);
+            }
+        }
+        /// <summary>
+        /// 是否无效行
+        /// </summary>
+        /// <param name="dr"></param>
+        /// <returns></returns>
+        public bool IsIllegalDataRow(DataRow dr)
+        {
+            return dr == null
+                || dr.RowState == DataRowState.Deleted
+                || dr.RowState == DataRowState.Detached;
+        }
     }
 }