C# guid[] in oracle caused System.ArgumentException:value does not fall within the expected range

when i use dapper with oracle database. and tranform Guid[] with IN operator
code bellow

`
var sqlBuilder = new StringBuilder()
.Append(" SELECT w."CourseId", c."Title", c."CourseComment", c."CategoryName", (case c."Type" WHEN 1 THEN N'综合类' ELSE N'专题类' end) as "CourseType"")
.Append(" FROM "tb_Violation_Item_KeyWord" k")
.Append(" Left Join "v_AllCourseKeyWords" w")
.Append(" ON w."CourseKeyWordId" = k."CourseKeyWordId"")
.Append(" Left Join "v_AllCourse" c")
.Append(" ON c."CourseId" = w."CourseId"")
.Append(" WHERE k."ItemId" in (:Ids)")
.Append(" and c."State" =1");

        var x = (from id in req.Ids select id).ToList();

        return WebQuery<dynamic>(sqlBuilder.ToString(), new { Ids = x});

`

and the parameter req is
public class IdListRequest { public Guid[] Ids { get; set; } }
when i executed the query, i got an error : value does not fall within the expected range

i have taken snap

please pay attention to this problem.

Start by reproducing the shown WebQuery call against Oracle with the IdListRequest.Guid[] value and the IN (:Ids) query. Inspect how Dapper binds this parameter and compare the provider error with the generated command details. Done means the cause of the exception is confirmed and the supported behavior or required change is clearly established.