Add constraint

Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/NavigatManager.cs

@@ -347,11 +347,13 @@ namespace SqlSugar
                 else if (method.Method.Name == "Select")
                 {
                     var exp = method.Arguments[1];
+                    var newExp = (exp as LambdaExpression).Body;
                     var types = exp.Type.GetGenericArguments();
                     if (types != null && types.Length > 0)
                     {
                         var type = types[0];
                         var entityInfo = this.Context.EntityMaintenance.GetEntityInfo(type);
+                        Check.ExceptionEasy(newExp.Type != entityInfo.Type, $" new {newExp.Type .Name}is error ,use Select(it=>new {entityInfo.Type.Name})",$"new {newExp.Type.Name}是错误的，请使用Select(it=>new {entityInfo.Type.Name})");
                         if (entityInfo.Columns.Count(x => x.Navigat != null) == 0)
                         {
                             result.SelectString = (" " + queryable.QueryBuilder.GetExpressionValue(exp, ResolveExpressType.SelectSingle).GetString());
@@ -401,6 +403,11 @@ namespace SqlSugar
                 Check.Exception(isList == false, $"{_ListCallFunc.First()} need is ToList()", $"{_ListCallFunc.First()} 需要ToList");
                 result.OrderByString = String.Join(" , ", oredrBy);
             }
+            if (result.SelectString.HasValue())
+            {
+                Check.Exception(isList == false, $"{_ListCallFunc.First()} need is ToList()", $"{_ListCallFunc.First()} 需要ToList");
+                result.OrderByString = String.Join(" , ", oredrBy);
+            }
             return result;
         }
 

Src/Asp.NetCore2/SqlSugar/SqlSugarForCore.nuspec

@@ -2,7 +2,7 @@
 <package >
   <metadata>
     <id>SqlSugarCore</id>
-    <version>5.0.7.4</version>
+    <version>5.0.7.5-preview01</version>
     <authors>sunkaixuan</authors>
     <owners>果糖大数据科技</owners>
     <licenseUrl>http://www.apache.org/licenses/LICENSE-2.0.html</licenseUrl>