-

SqlSugar/ExpressionsToSql/Method/DefaultDbMethod.cs

@@ -103,5 +103,74 @@ namespace SqlSugar
             var parameter2 = model.Args[1];
             return string.Format(" ({0}({1})) ", parameter2.Value, parameter.Value);
         }
+
+        public string ToInt32(MethodCallExpressionModel model)
+        {
+            var parameter = model.Args[0];
+            return string.Format(" CAST({0} AS INT)", parameter.Value);
+        }
+
+        public string ToInt64(MethodCallExpressionModel model)
+        {
+            var parameter = model.Args[0];
+            return string.Format(" CAST({0} AS BIGINT)", parameter.Value);
+        }
+
+        public string ToString(MethodCallExpressionModel model)
+        {
+            var parameter = model.Args[0];
+            return string.Format(" CAST({0} AS NVARCHAR(MAX))", parameter.Value);
+        }
+
+        public string ToGuid(MethodCallExpressionModel model)
+        {
+            var parameter = model.Args[0];
+            return string.Format(" CAST({0} AS UNIQUEIDENTIFIER", parameter.Value);
+        }
+
+        public string ToDouble(MethodCallExpressionModel model)
+        {
+            var parameter = model.Args[0];
+            return string.Format(" CAST({0} AS FLOAT", parameter.Value);
+        }
+
+        public string ToBool(MethodCallExpressionModel model)
+        {
+            var parameter = model.Args[0];
+            return string.Format(" CAST({0} AS BIT", parameter.Value);
+        }
+
+        public string ToDate(MethodCallExpressionModel model)
+        {
+            var parameter = model.Args[0];
+            return string.Format(" CAST({0} AS DATETIME", parameter.Value);
+        }
+
+        public string ToDecimal(MethodCallExpressionModel model)
+        {
+            var parameter = model.Args[0];
+            return string.Format(" CAST({0} AS MONEY", parameter.Value);
+        }
+        public string Substring(MethodCallExpressionModel model)
+        {
+            var parameter = model.Args[0];
+            var parameter2 = model.Args[1];
+            var parameter3 = model.Args[2];
+            return string.Format("SUBSTRING({0},1 + {1},{2})", parameter.Value,parameter2.Value, parameter3.Value);
+        }
+
+        public string Length(MethodCallExpressionModel model)
+        {
+            var parameter = model.Args[0];
+            return string.Format("LEN({0})", parameter.Value);
+        }
+
+        public string Replace(MethodCallExpressionModel model)
+        {
+            var parameter = model.Args[0];
+            var parameter2 = model.Args[1];
+            var parameter3 = model.Args[2];
+            return string.Format("REPLACE({0},{1},{2})", parameter.Value, parameter2.Value, parameter3.Value);
+        }
     }
 }

SqlSugar/ExpressionsToSql/Method/IDbMethods.cs

@@ -25,5 +25,16 @@ namespace SqlSugar
         string Between(MethodCallExpressionModel model);
         string StartsWith(MethodCallExpressionModel model);
         string EndsWith(MethodCallExpressionModel model);
+        string ToInt32(MethodCallExpressionModel model);
+        string ToInt64(MethodCallExpressionModel model);
+        string ToString(MethodCallExpressionModel model);
+        string ToGuid(MethodCallExpressionModel model);
+        string ToDouble(MethodCallExpressionModel model);
+        string ToBool(MethodCallExpressionModel model);
+        string Substring(MethodCallExpressionModel model);
+        string ToDate(MethodCallExpressionModel model);
+        string ToDecimal(MethodCallExpressionModel model);
+        string Length(MethodCallExpressionModel model);
+        string Replace(MethodCallExpressionModel model);
     }
 }

SqlSugar/ExpressionsToSql/Method/NBORM.cs

@@ -13,8 +13,8 @@ namespace SqlSugar
         public static string ToUpper(object thisValue) { throw new NotImplementedException(); }
         public static string Trim(object thisValue) { throw new NotImplementedException(); }
         public static bool Contains(string thisValue, string parameterValue) {  throw new NotImplementedException();}
-        public static bool StartsWith(string thisValue, string parameterValue) { throw new NotImplementedException(); }
-        public static bool EndsWith(string thisValue, string parameterValue) { throw new NotImplementedException(); }
+        public static bool StartsWith(object thisValue, string parameterValue) { throw new NotImplementedException(); }
+        public static bool EndsWith(object thisValue, string parameterValue) { throw new NotImplementedException(); }
         public new static bool Equals(object thisValue, object parameterValue) { throw new NotImplementedException(); }
         public static bool DateIsSame(DateTime date1, DateTime date2) {  throw new NotImplementedException();}
         public static bool DateIsSame(DateTime date1, DateTime date2, DateType dataType)  { throw new NotImplementedException(); }
@@ -22,5 +22,16 @@ namespace SqlSugar
         public static DateTime DateAdd(DateTime date, int addValue) { throw new NotImplementedException(); }
         public static int DateValue(DateTime date, DateType dataType) { throw new NotImplementedException(); }
         public static bool Between(object value, object start, object end){ throw new NotImplementedException();}
+        public static int ToInt32(object value) { throw new NotImplementedException(); }
+        public static long ToInt64(object value) { throw new NotImplementedException(); }
+        public static DateTime ToDate(object value) { throw new NotImplementedException(); }
+        public static string ToString(object value) { throw new NotImplementedException(); }
+        public static decimal ToDecimal(object value) { throw new NotImplementedException(); }
+        public static Guid ToGuid(object value) { throw new NotImplementedException(); }
+        public static double ToDouble(object value) { throw new NotImplementedException(); }
+        public static bool ToBool(object value) { throw new NotImplementedException(); }
+        public static string Substring(object value, int index, int length) { throw new NotImplementedException(); }
+        public static string Replace(object value,string oldChar, string newChar) { throw new NotImplementedException(); }
+        public static int Length(object value) { throw new NotImplementedException(); }
     }
 }

SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve.cs

@@ -98,6 +98,28 @@ namespace SqlSugar
                     return this.Context.DbMehtods.StartsWith(model);
                 case "EndsWith":
                     return this.Context.DbMehtods.EndsWith(model);
+                case "ToInt32":
+                     return this.Context.DbMehtods.ToInt32(model);
+                case "ToInt64":
+                    return this.Context.DbMehtods.ToInt64(model);
+                case "ToDate":
+                    return this.Context.DbMehtods.ToDate(model);
+                case "ToString":
+                    return this.Context.DbMehtods.ToString(model);
+                case "ToDecimal":
+                    return this.Context.DbMehtods.ToDecimal(model);
+                case "ToGuid":
+                    return this.Context.DbMehtods.ToGuid(model);
+                case "ToDouble":
+                    return this.Context.DbMehtods.ToDouble(model);
+                case "ToBool":
+                    return this.Context.DbMehtods.ToBool(model);
+                case "Substring":
+                    return this.Context.DbMehtods.Substring(model);
+                case "Replace":
+                    return this.Context.DbMehtods.Replace(model);
+                case "Length":
+                    return this.Context.DbMehtods.Length(model);
                 default:
                     break;
             }