.NET中如何在GraphQL查询中设置变量？报错Expecting Name found $

你的GraphQL查询存在语法结构错误，导致$pageSize变量无法被正确解析，报错Expecting Name found $的核心原因是：

• 外层多了一对冗余的大括号，破坏了GraphQL的语法结构
• 变量定义的位置不符合规范，被错误嵌套在额外的大括号中

修正后的代码 #

var query = new GraphQLRequest
{
    Query = @"
query StudentQuery($pageSize : Int) {
    studentQuery(skip:20, pageSize: $pageSize ){
        totalRecords
        pageInfo{
            hasNextPage
        }
        students{
            studentCursor
            studentCode
            firstName
            surname
            studentPlacements(placementStatuses:[""Offered"", ""Published"", ""Incomplete"", ""Cancelled"", ""Accepted"", ""Completed"", ""Withdrawn Education Provider"", ""Withdrawn Student""]){
                placementId
                startDate
                endDate
                publishedPersonnelEmail
                placementStatus
                placementAgencies{
                    agencyCode
                    agencyName
                    agencyLevel
                }
            }
        }
    }
}",
    Variables = new { pageSize = 10 },
};

关键调整点 #

1. 移除最外层多余的{}，让查询从命名语句query StudentQuery($pageSize : Int)开始
2. 确保变量定义($pageSize : Int)直接紧跟在命名查询之后，符合GraphQL语法规范
3. 保留原有的查询字段、筛选条件和变量绑定逻辑，仅修正结构问题

内容的提问来源于stack exchange，提问作者user1086377