将时间发送到SQL Server Management Studio表，但不显示吗？

Question

I am currently writing an application which involves a user being able to write the time to a database by clicking a button. The problem is that the data will be send to the database table, but it does not show the time in SQL Server Management Studio.

This is my query:

{
    string query = "insert into Sign_In_Out_Table(Sign_In)Values('"+ timetickerlbl.ToString()+ "')";
    SqlCommand cmd = new SqlCommand(query, con);
    cmd.Parameters.AddWithValue("@SignIn", DateTime.Parse (timetickerlbl.Text));
    //cmd.ExecuteNonQuery();
    MessageBox.Show("Signed in sucessfully" +timetickerlbl);
    con.Close();
}

The datatype in SQL Server is set to datetime .

I'm open for suggestions to find a better way to capture the PC's time and logging it in a database.

Answer 1

1. Don't wrap the variable in ' when you are setting value with Parameters.Add() , or Parameters.AddWithValue() as they would wrap if needed.

2. The variable in here would be the value of Sign_In and not the Sign_In itself.

3. Always use Parameters.Add() instead of Parameters.AddWithValue() :

    string query = "insert into Sign_In_Out_Table(Sign_In) Values(@value)"; SqlCommand cmd = new SqlCommand(query, con); cmd.Parameters.Add("@value", SqlDbType.DateTime).Value = DateTime.Parse(timetickerlbl.Text); 

Edit (Considering your comment):

If still it does not insert it, of course there is an error in your code, it could be a syntax error, invalid table or column name, connection problem ,... so put your code in a try-catch block (if it isn't already) and see what error you you get, it should give you a hint:

try
{
    //the lines of code for insert
}
catch(Exception ex)
{
    string msg = ex.Message;
   // the above line you put a break point and see if it reaches to the break point, and what the error message is.
}

Answer 2

Your table does not contain your timestamp because you have commented the execution of your query. Presumably you added the comment because this line was throwing an error, remove the comment and share the error with us.

cmd.ExecuteNonQuery();