Support CodeFirst Multiple Primary Key

Src/Asp.Net/MySqlTest/Demos/5_CodeFirst.cs

@@ -31,6 +31,15 @@ namespace OrmTest.Demo
         [SugarColumn(IsIgnore =true)]
         public string TestId { get; set; }
     }
+    public class CodeTable3
+    {
+        [SugarColumn(IsPrimaryKey = true)]
+        public int Id { get; set; }
+        [SugarColumn(IsPrimaryKey = true)]
+        public string Name { get; set; }
+        [SugarColumn(IsIgnore = true)]
+        public string TestId { get; set; }
+    }
     public class CodeFirst : DemoBase
     {
         public static void Init()
@@ -47,7 +56,7 @@ namespace OrmTest.Demo
             //db.CodeFirst.BackupTable().InitTables(typeof(CodeTable),typeof(CodeTable2));
 
             //No backup table
-            db.CodeFirst.InitTables(typeof(CodeTable),typeof(CodeTable2));
+            db.CodeFirst.InitTables(typeof(CodeTable),typeof(CodeTable2),typeof(CodeTable3));
         }
     }
 }

Src/Asp.Net/SqlServerTest/Demos/5_CodeFirst.cs

@@ -34,6 +34,15 @@ namespace OrmTest.Demo
         [SugarColumn(IsIgnore =true)]
         public string TestId { get; set; }
     }
+    public class CodeTable3
+    {
+        [SugarColumn(IsPrimaryKey =true)]
+        public int Id { get; set; }
+        [SugarColumn(IsPrimaryKey = true)]
+        public string Name { get; set; }
+        [SugarColumn(IsIgnore = true)]
+        public string TestId { get; set; }
+    }
     public class CodeFirst : DemoBase
     {
         public static void Init()
@@ -51,6 +60,9 @@ namespace OrmTest.Demo
 
             //No backup table
             db.CodeFirst.SetStringDefaultLength(10).InitTables(typeof(CodeTable),typeof(CodeTable2));
+
+
+            db.CodeFirst.InitTables(typeof(CodeTable3));
         }
     }
 }

Src/Asp.Net/SqlSugar/Abstract/CodeFirstProvider/CodeFirstProvider.cs

@@ -94,7 +94,7 @@ namespace SqlSugar
         public virtual void NoExistLogic(EntityInfo entityInfo)
         {
             var tableName = GetTableName(entityInfo);
-            Check.Exception(entityInfo.Columns.Where(it => it.IsPrimarykey).Count() > 1, "Use Code First ,The primary key must not exceed 1");
+            //Check.Exception(entityInfo.Columns.Where(it => it.IsPrimarykey).Count() > 1, "Use Code First ,The primary key must not exceed 1");
             List<DbColumnInfo> columns = new List<DbColumnInfo>();
             if (entityInfo.Columns.HasValue())
             {
@@ -110,7 +110,7 @@ namespace SqlSugar
         {
             if (entityInfo.Columns.HasValue())
             {
-                Check.Exception(entityInfo.Columns.Where(it => it.IsPrimarykey).Count() > 1, "Use Code First ,The primary key must not exceed 1");
+                //Check.Exception(entityInfo.Columns.Where(it => it.IsPrimarykey).Count() > 1, "Multiple primary keys do not support modifications");
 
                 var tableName = GetTableName(entityInfo);
                 var dbColumns = this.Context.DbMaintenance.GetColumnInfosByTableName(tableName);

Src/Asp.Net/SqlSugar/Abstract/DbMaintenanceProvider/Methods.cs

@@ -140,6 +140,15 @@ namespace SqlSugar
             this.Context.Ado.ExecuteCommand(sql);
             return true;
         }
+
+        public bool AddPrimaryKeys(string tableName, string[] columnNames)
+        {
+            tableName = this.SqlBuilder.GetTranslationTableName(tableName);
+            var columnName = string.Join(",", columnNames);
+            string sql = string.Format(this.AddPrimaryKeySql, tableName, string.Format("PK_{0}_{1}", this.SqlBuilder.GetNoTranslationColumnName(columnNames.First()), this.SqlBuilder.GetNoTranslationColumnName(columnNames.First())), columnName);
+            this.Context.Ado.ExecuteCommand(sql);
+            return true;
+        }
         public virtual bool AddColumn(string tableName, DbColumnInfo columnInfo)
         {
             tableName = this.SqlBuilder.GetTranslationTableName(tableName);

Src/Asp.Net/SqlSugar/Interface/IDbMaintenance.cs

@@ -32,6 +32,7 @@ namespace SqlSugar
         bool AddColumn(string tableName, DbColumnInfo column);
         bool UpdateColumn(string tableName, DbColumnInfo column);
         bool AddPrimaryKey(string tableName,string columnName);
+        bool AddPrimaryKeys(string tableName, string [] columnNames);
         bool DropConstraint(string tableName, string constraintName);
         bool BackupDataBase(string databaseName,string fullFileName);
         bool BackupTable(string oldTableName, string newTableName, int maxBackupDataRows = int.MaxValue);

Src/Asp.Net/SqlSugar/Realization/MySql/CodeFirst/MySqlCodeFirst.cs

@@ -10,7 +10,7 @@ namespace SqlSugar
         public override void NoExistLogic(EntityInfo entityInfo)
         {
             var tableName = GetTableName(entityInfo);
-            Check.Exception(entityInfo.Columns.Where(it => it.IsPrimarykey).Count() > 1, "Use Code First ,The primary key must not exceed 1");
+            //Check.Exception(entityInfo.Columns.Where(it => it.IsPrimarykey).Count() > 1, "Use Code First ,The primary key must not exceed 1");
             List<DbColumnInfo> columns = new List<DbColumnInfo>();
             if (entityInfo.Columns.HasValue())
             {

Src/Asp.Net/SqlSugar/Realization/SqlServer/DbMaintenance/SqlServerDbMaintenance.cs

@@ -282,9 +282,16 @@ namespace SqlSugar
             if (isCreatePrimaryKey)
             {
                 var pkColumns = columns.Where(it => it.IsPrimarykey).ToList();
-                foreach (var item in pkColumns)
+                if (pkColumns.Count > 1)
                 {
-                    this.Context.DbMaintenance.AddPrimaryKey(tableName, item.DbColumnName);
+                    this.Context.DbMaintenance.AddPrimaryKeys(tableName, pkColumns.Select(it=>it.DbColumnName).ToArray());
+                }
+                else
+                {
+                    foreach (var item in pkColumns)
+                    {
+                        this.Context.DbMaintenance.AddPrimaryKey(tableName, item.DbColumnName);
+                    }
                 }
             }
             return true;