diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/AdoProvider/AdoProvider.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/AdoProvider/AdoProvider.cs
index 832c7f701..342f86193 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/AdoProvider/AdoProvider.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/AdoProvider/AdoProvider.cs
@@ -1528,6 +1528,12 @@ namespace SqlSugar
                             item.Value = DBNull.Value;
                         }
                     }
+                    if (item.ParameterName != null && item.ParameterName.Contains(" ")) 
+                    {
+                        var oldName = item.ParameterName;
+                        item.ParameterName = item.ParameterName.Replace(" ", "");
+                        sql = sql.Replace(oldName, item.ParameterName);
+                    }
                 }
             }
         }
diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/DeleteProvider/DeleteableProvider.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/DeleteProvider/DeleteableProvider.cs
index d68252b30..e78747bb3 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/DeleteProvider/DeleteableProvider.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/DeleteProvider/DeleteableProvider.cs
@@ -107,6 +107,7 @@ namespace SqlSugar
                     var entityPropertyName = this.Context.EntityMaintenance.GetPropertyName<T>(primaryField);
                     var columnInfo = EntityInfo.Columns.Single(it => it.PropertyName.Equals(entityPropertyName, StringComparison.CurrentCultureIgnoreCase));
                     var value = columnInfo.PropertyInfo.GetValue(deleteObj, null);
+                    value = UtilMethods.GetConvertValue(value);
                     primaryKeyValues.Add(value);
                 }
                 if (primaryKeyValues.Count < 10000)
@@ -168,6 +169,11 @@ namespace SqlSugar
                         }
                         else
                         {
+                            if ((columnInfo.SqlParameterDbType.ObjToString()==System.Data.DbType.AnsiString.ObjToString()) ||!(entityValue is string)||this.Context.CurrentConnectionConfig?.MoreSettings?.DisableNvarchar==true)
+                            {
+                                tempequals = tempequals.Replace("=N'", "='");
+                            }
+                            entityValue = UtilMethods.GetConvertValue(entityValue);
                             andString.AppendFormat(tempequals, primaryField, entityValue);
                         }
                         ++i;
@@ -179,7 +185,6 @@ namespace SqlSugar
             }
             return this;
         }
-
         public IDeleteable<T> Where(Expression<Func<T, bool>> expression)
         {
             var expResult = DeleteBuilder.GetExpressionValue(expression, ResolveExpressType.WhereSingle);
diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/DeleteNavProvider.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/DeleteNavProvider.cs
index ac88473fc..46c23c65c 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/DeleteNavProvider.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/DeleteNavProvider.cs
@@ -100,12 +100,14 @@ namespace SqlSugar
             }
             else if (method.Method.Name == "Where")
             {
+                this._Context.InitMappingInfo<T>();
                 navigatManager.CheckHasRootShortName(method.Arguments[0], method.Arguments[1]);
                 var exp = method.Arguments[1];
                 _WhereList.Add(" " + queryBuilder.GetExpressionValue(exp, ResolveExpressType.WhereSingle).GetString());
             }
             else if (method.Method.Name == "WhereIF")
             {
+                this._Context.InitMappingInfo<T>();
                 var isOk = LambdaExpression.Lambda(method.Arguments[1]).Compile().DynamicInvoke();
                 if (isOk.ObjToBool())
                 {
diff --git a/Src/Asp.NetCore2/SqlSugar/Utilities/UtilMethods.cs b/Src/Asp.NetCore2/SqlSugar/Utilities/UtilMethods.cs
index a01cf35fd..a11519f5f 100644
--- a/Src/Asp.NetCore2/SqlSugar/Utilities/UtilMethods.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Utilities/UtilMethods.cs
@@ -221,6 +221,15 @@ namespace SqlSugar
             return info;
         }
 
+        internal static object GetConvertValue(object entityValue)
+        {
+            if (entityValue != null && entityValue is DateTime)
+            {
+                entityValue = entityValue.ObjToDate().ToString("yyyy-MM-dd HH:mm:ss.fff");
+            }
+            return entityValue;
+        }
+
         internal static T To<T>(object value)
         {
             return (T)To(value, typeof(T));