我有一个调查问卷,它存储了每个进行测试的用户的答案。我需要将输出存储在数据库中(这是用户进行测试)。我不太确定我做错了什么。目前我inputID返回0(InputAnswers输入该用户的数据库测试的答案)SQL输出参数
CREATE PROCEDURE [dbo].[InputAnswers]
@QuestionID int,
@InputID int OUTPUT,
@Answer nchar,
@Remark nvarchar(50)
AS
BEGIN
SET NOCOUNT ON;
INSERT INTO Answers (InputID, QuestionID, Answer, Remark) VALUES (@InputID, @QuestionID, @Answer, @Remark)
END
下面的代码加载从保存的问题列表视图中的答案:
private void LoadAnswers(int inputID)
{
foreach (StepControl step in dckSteps.Children)
{
foreach (QuestionControl quest in step.listQuestions.Items)
{
int questionID = quest.questionID;
string answer = quest.answer;
string remark = quest.txtRemark.Text;
SqlConnection conDatabase = new SqlConnection(String.Format(@"Data Source={0};Initial Catalog={1};Persist Security Info=True;User ID={2};Password={3}", SQLSERVER_ID, SQLDatabaseName, SQLServerLoginName, SQLServerPassword));
string query = "InputAnswers";
SqlCommand cmd = new SqlCommand(query, conDatabase);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@InputID", SqlDbType.Int).Value = inputID;
cmd.Parameters.Add("@QuestionID", SqlDbType.Int).Value = questionID;
cmd.Parameters.Add("@Answer", SqlDbType.NChar).Value = answer;
cmd.Parameters.Add("@Remark", SqlDbType.NVarChar).Value = remark;
conDatabase.Open();
cmd.ExecuteNonQuery();
conDatabase.Close();
}
}
}
我然后负载这些答案到按钮点击方法:
private void btnSubmit_Click(object sender, RoutedEventArgs e)
{
string name = txtName.Text;
string cno = txtCNO.Text;
var date = datePicker.SelectedDate;
int inputID = 0;
SqlConnection conDatabase = new SqlConnection(String.Format(@"Data Source={0};Initial Catalog={1};Persist Security Info=True;User ID={2};Password={3}", SQLSERVER_ID, SQLDatabaseName, SQLServerLoginName, SQLServerPassword));
string query = "SaveInput";
SqlCommand cmd = new SqlCommand(query, conDatabase);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@InputID", SqlDbType.Int).Value = ParameterDirection.Output;
cmd.Parameters.Add("@Name", SqlDbType.NVarChar).Value = name;
cmd.Parameters.Add("@CNO", SqlDbType.NVarChar).Value = cno;
cmd.Parameters.Add("@Date", SqlDbType.DateTime).Value = date;
conDatabase.Open();
cmd.ExecuteNonQuery();
conDatabase.Close();
LoadAnswers(inputID);
}
这一切都正常工作除了将输出发送到数据库。有任何想法吗?
编辑:程序SaveInput看起来是这样的:(SaveInput存储用户信息)
CREATE PROCEDURE [dbo].[SaveInput]
@InputID int OUTPUT,
@Name nvarchar(50),
@CNO nvarchar(50),
@Date DATETIME
AS
BEGIN
SET NOCOUNT ON;
IF(@InputID = 0)
BEGIN
INSERT INTO Input (Name, CNO, Date) VALUES (@Name, @CNO, @Date)
SET @InputID = @@IDENTITY
END
ELSE
BEGIN
UPDATE Input SET Name = @Name,
CNO = @CNO,
Date = @Date
WHERE InputID = @InputID
END
END
我有一种感觉,我不需要在这两个程序用的输出。
变化'IF(@InputID = 0)''到IF(@InputID是NULL)'否则你'@ InputID'决不会与标识值被分配 –
不要使用'nchar'没有长度。 –