-

OrmTest/ExpressionTest/Method.cs

@@ -28,10 +28,22 @@ namespace OrmTest.ExpressionTest
                 StringIsNullOrEmpty4();
                 ToUpper();
                 ToLower();
+                Trim();
                 #endregion
             }
             base.End("Method Test");
         }
+        private void Trim()
+        {
+            Expression<Func<Student, bool>> exp = it =>NBORM.Trim("  a")==it.Name;
+            SqlServerExpressionContext expContext = new SqlServerExpressionContext(exp, ResolveExpressType.WhereSingle);
+            expContext.Resolve();
+            var value = expContext.Result.GetString();
+            var pars = expContext.Parameters;
+            base.Check(value, pars, "( @Const0  = (UPPER(Id)) )", new List<SugarParameter>() {
+                new SugarParameter("@Const0","a")
+            }, "ToUpper");
+        }
 
         private void ToUpper()
         {

SqlSugar/ExpressionsToSql/Method/DefaultDbMethod.cs

@@ -24,5 +24,11 @@ namespace SqlSugar
             var parameter = model.Args[0];
             return string.Format(" (LOWER({0})) ", parameter.Value);
         }
+
+        public object Trim(MethodCallExpressionModel model)
+        {
+            var parameter = model.Args[0];
+            return string.Format(" (rtrim(ltrim({0}))) ", parameter.Value);
+        }
     }
 }

SqlSugar/ExpressionsToSql/Method/IDbMethods.cs

@@ -14,5 +14,6 @@ namespace SqlSugar
         string IsNullOrEmpty(MethodCallExpressionModel model);
         object ToLower(MethodCallExpressionModel model);
         object ToUpper(MethodCallExpressionModel model);
+        object Trim(MethodCallExpressionModel model);
     }
 }

SqlSugar/ExpressionsToSql/Method/NBORM.cs

@@ -11,5 +11,6 @@ namespace SqlSugar
         public static bool IsNullOrEmpty(object thisValue) { throw new NotImplementedException(); }
         public static string ToLower(object thisValue) { throw new NotImplementedException(); }
         public static string ToUpper(object thisValue) { throw new NotImplementedException(); }
+        public static string Trim(object thisValue) { throw new NotImplementedException(); }
     }
 }

SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve.cs

@@ -71,6 +71,8 @@ namespace SqlSugar
                     return this.Context.DbMehtods.ToLower(model);
                 case "ToUpper":
                     return this.Context.DbMehtods.ToUpper(model);
+                case "Trim":
+                    return this.Context.DbMehtods.Trim(model);
                 default:
                     break;
             }