如果你能帮助我,我有一个错误,我正在努力了解错误是什么,所以我可以解决它,因为我是一个初学者。
我的错误是:
Must declare the scalar variable "@Details"
我的功能是这样的:
public static void CreateReview(string paperId, string grate, string criteriaId, string Details)
{
var sqlCon = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString);
// GET CONFERENCE ROLE ID
SqlCommand cmd = new SqlCommand();
cmd.Connection = sqlCon;
cmd.CommandText = "select Conference_Role_ID from AuthorPaper where Paper_ID = @PaperId";
cmd.Parameters.AddWithValue("@PaperId", paperId);
cmd.Connection.Open();
string ConferenceRoleId = cmd.ExecuteScalar().ToString();
cmd.Connection.Close();
cmd.Dispose();
string query2 = @"insert into ReviewPaper(Overall_Rating,Paper_id,Conference_role_id,Details)
values(0,@paperId,@ConferenceRoleId,@Details); select
SCOPE_IDENTITY() as RPID";
cmd = new SqlCommand(query2, sqlCon);
cmd.Parameters.AddWithValue("@paperId",
paperId);
cmd.Parameters.AddWithValue("@ConferenceRoleId",
ConferenceRoleId);
string ReviewPaperId;
try
{
cmd.Connection.Open();
ReviewPaperId = cmd.ExecuteScalar().ToString();
cmd.Connection.Close();
}
catch (Exception ee) { throw ee; }
finally { cmd.Dispose(); } }
如果我删除细节我的功能完美。提前感谢你。
答案 0 :(得分:1)
你需要一条线:
cmd.Parameters.AddWithValue("@Details", Details);
您正在执行带有3个参数的语句,但您只提供两个参数。
答案 1 :(得分:1)
您需要在代表@Details
的SqlCommand中添加一个新参数cmd = new SqlCommand(query2, sqlCon);
cmd.Parameters.AddWithValue("@paperId",paperId);
cmd.Parameters.AddWithValue("@ConferenceRoleId", ConferenceRoleId);
// Add the details parameter
cmd.Parameters.AddWithValue("@Details", Details);