Question : Sql syntax( datetime) problem

Experts
please see the following sql query and suggest me whether it is correct or wrong .
As it is not giving any o/p.

DateTime dt=DateTime.Today;
using (SqlConnection con = new SqlConnection(Connectionstring.Connection))
{
string query = "select count(InteractionID) from Table_Interaction where reminderDate '" + dt + "' ";
using (SqlCommand cmd = new SqlCommand(query, con))
{
con.Open();
SqlDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
label2.Text = string.Format("{0}", reader[0]);
}
}

}

For more information please see the images attached for the table design.
Experts I am using Sql server 2005 not sql server 2008.
Thanking you
Anindya

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private void show_reminders()
        {
            DateTime dt=DateTime.Today;
            using (SqlConnection con = new SqlConnection(Connectionstring.Connection))
            {
                string query = "select count(InteractionID) from Table_Interaction where reminderDate '" + dt + "' ";
                using (SqlCommand cmd = new SqlCommand(query, con))
                {
                    con.Open();
                    SqlDataReader reader = cmd.ExecuteReader();
                    while (reader.Read())
                    {
                        label2.Text = string.Format("{0}", reader[0]);
                    }
                }


            }
        }

Attachments:

error.JPG (105 KB) (File Type Details)

error.JPG (112 KB) (File Type Details)

Answer : Sql syntax( datetime) problem

then:

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private void show_reminders()
        {
            DateTime dt=DateTime.Today;
            using (SqlConnection con = new SqlConnection(Connectionstring.Connection))
            {
                string query = "select count(InteractionID) from Table_Interaction where reminderDate >= @date and reminderDate < dateadd(day, 1, @date) ";
                using (SqlCommand cmd = new SqlCommand(query, con))
                {
                    cmd.Parameters.Add("@date", dt);
                    con.Open();
                    SqlDataReader reader = cmd.ExecuteReader();
                    while (reader.Read())
                    {
                        label2.Text = string.Format("{0}", reader[0]);
                    }
                }


            }
        }