C# asp.net标量变量中存在错误
如果你能帮助我,我有一个错误,我正试图了解错误是怎么回事,这样我就可以修复它,因为我是一个初学者 我的错误是:C# asp.net标量变量中存在错误,c#,asp.net,sql,C#,Asp.net,Sql,如果你能帮助我,我有一个错误,我正试图了解错误是怎么回事,这样我就可以修复它,因为我是一个初学者 我的错误是: Must declare the scalar variable "@Details" 我的函数是这样的: public static void CreateReview(string paperId, string grate, string criteriaId, string Details) { var sqlCon = new SqlConnection(Syste
Must declare the scalar variable "@Details"
我的函数是这样的:
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(); } }
如果我删除了详细信息,我的功能将完美运行。提前感谢您。您需要一条线路:
cmd.Parameters.AddWithValue("@Details", Details);
您正在执行接受3个参数的语句,但只提供了两个参数。您需要向SqlCommand添加一个表示@Details的新参数
cmd = new SqlCommand(query2, sqlCon);
cmd.Parameters.AddWithValue("@paperId",paperId);
cmd.Parameters.AddWithValue("@ConferenceRoleId", ConferenceRoleId);
// Add the details parameter
cmd.Parameters.AddWithValue("@Details", Details);