Why is my datetime code not working?

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I am trying to save the current date to a database called Deadline but it is not getting saved, the database also has Id column but I have set identity(1,1) for it. Still not inserting also please let me know the code to compare the saved time to current time thanks.

The data type I used for the column date is DateTime.
Here is the code I used.

protected void Button1_Click(object sender, EventArgs e)
    {

        string constr = ConfigurationManager.ConnectionStrings["facultylogConnectionString"].ConnectionString;
        using (SqlConnection con = new SqlConnection(constr))
        {
            using (SqlCommand cmd = new SqlCommand())
            {
                cmd.CommandText = "Insert into Deadline (Date) values (@Date)";
                {
                    cmd.Parameters.AddWithValue("@Date", DateTime.Now);
                    cmd.Connection = con;
                    con.Open();
                    cmd.ExecuteReader();
                    con.Close();
                }
            }
        }


    }

What I have tried:

Tried this as well

String strConnString = ConfigurationManager.ConnectionStrings["facultylogConnectionString"].ConnectionString;
       String strQuery = "Insert into Deadline (Date) values (GetDate())";
       SqlConnection con = new SqlConnection(strConnString);
       SqlCommand cmd = new SqlCommand();
       cmd.CommandType = CommandType.Text;
       cmd.CommandText = strQuery;
       cmd.Connection = con;
       con.Open();
       cmd.ExecuteNonQuery();
       con.Close();

Posted 2-Jul-20 12:55pm

candijen

Updated 6-Jul-20 5:26am

v3

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Luc Pattyn · Answer 1 · 2020-07-02T14:09:00

I see two problems:

1.
You can't modify your database with ExecuteReader; that method only reads something from the database, it does never write anything to it. Use ExecuteNonQuery for inserts, updates, deletes...

2.
A lot of words (list) are reserved in SQL and "Date" is one of them. Two solutions: (a) avoid using them as field names, that is the easiest way; (b) escape them in your SQL statement; the exact way to do that depends on the database being used, candidates are brackets as in [Date] and double quotes, which is somewhat harder to get right inside a string!

:)

Sweety K · Answer 2 · 2020-07-06T05:26:00

Check other columns in database are nullable or not.

After this try code given below-
cmd.Parameters.AddWithValue("@Date", DateTime.Now.ToShortDateString());
if (con.State == ConnectionState.Closed)
{
con.Open();
}

result = cmd.ExecuteNonQuery();

cmd.Dispose();

if (result > 0)
{
return result;
}
else
{
return 0;
}

Sweety K · Answer 3 · 2020-07-03T03:57:00

Solution 2

what is data type of Date column in database? Is it datetime or varchar?
second thing Getdate() is function in SQL server Not in c#.

Can you explain more about this?

Posted 3-Jul-20 3:57am

Sweety K

Comments

candijen 3-Jul-20 13:51pm

it is datetime

Why is my datetime code not working?

3 solutions

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Solution 2

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