Question

I´ve got a special problem, that first seems very easy but I don´t know any solution.
At the moment I programm a C#-WPF-Application that makes it possible to save bookings.
A booking also has a date, which I take from a calender.
I save the booking to my Sql-Express Database and the value of a date is “DD.MM.YYYY”, the datatype is date.

Now, I load the data into a datagrid in my application:

    public DataSet SaveDataToDataSet(DataSet dataset)
    {

        string connectionString = "Data Source=.\\SQLEXPRESS;AttachDbFilename=C:\\Users\\Harald\\Desktop\\Farmer´s Calc\\Programmierung\\WPF\\Finanz_WPF\\Finanz_WPF\\FarmersCalc.mdf;Integrated Security=True;User Instance=True";
        string query = "select bezeichnung 'Bezeichnung', einausgaben 'Einnahmen-Ausgaben',  kostenstelle 'Kostenstelle',  datum 'Buchungsdatum', betrag 'Betrag', details 'Details' from Buchung";
        using (SqlConnection connection =
            new SqlConnection(connectionString))
        {
            SqlDataAdapter adapter = new SqlDataAdapter();
            adapter.SelectCommand = new SqlCommand(
                query, connection);

            adapter.Fill(dataset);
            return dataset;

        }
    }

Strangely, the date column in the DataGrid has the format “DD.MM.YYYY HH:MM:SS”, but I only want “DD.MM.YYYY”!
What I need to say is, that I don´t have Columns defined, I make it with AutoGenerateColumns=true.
Does anybody know a solution for that?

Answer 1

The “date” Sql type ends up being a DateTime in your dataset, which is why you’re getting the time as well. You’ll need to define columns and specify formatting on your datagrid.

EDIT: I was mistaken about not being able to format this when auto generating columns. As the other answer here mentions, this question: Need to format dates in dynamically built WPF DataGrid addresses some ways to accomplish this.