ASP.Net insert data from form to a database Exception - asp.net

Question

I'm trying to insert data from a form to my database and it is throwing this error:
No mapping exists from object type System.Web.UI.WebControls.TextBox to a known managed provider native type.
Maybe it has to do with the fact that I try to get a data from a dropdownlist and I'm not really sure the syntax is great.
Here is the code:
protected void Button1_Click(object sender, EventArgs e)
{
SqlConnection conn = new SqlConnection("Data Source=MICROSOF-58B8A5\\SQL_SERVER_R2;Initial Catalog=Movie;Integrated Security=True");
conn.Open();
string titleName = Title.Text;
string sqlQuery = ("INSERT INTO Movies(Ganere, Title, Descreption) VALUES (#Ganere, #Title , #Descreption) ");
SqlCommand cmd = new SqlCommand(sqlQuery, conn);
cmd.Parameters.AddWithValue("Title", Title);
string genre = GenreDropDown.SelectedIndex.ToString();
cmd.Parameters.AddWithValue("Ganere", GenreDropDown);
string descp = Descreption.Text;
cmd.Parameters.AddWithValue("Descreption", Descreption);
if (titleName == null || genre == null)
{
ErrorMessege.Text = "Please fill all of the fields.";
}
else
{
ErrorMessege.Text = "You have successfully add a movie!";
cmd.ExecuteNonQuery();
}
conn.Close();
}

Answer 1

You -weren't using any of the vars where you had the values
string titleName = Title.Text;
string sqlQuery = ("INSERT INTO Movies(Ganere, Title, Descreption) VALUES (#Ganere, #Title , #Descreption) ");
SqlCommand cmd = new SqlCommand(sqlQuery, conn);
cmd.Parameters.AddWithValue("Title", titlename);
string genre = GenreDropDown.SelectedIndex.ToString();
cmd.Parameters.AddWithValue("Ganere", genre);
string descp = Descreption.Text;
cmd.Parameters.AddWithValue("Descreption", descp);
if (titleName == null || genre == null)
{
ErrorMessege.Text = "Please fill all of the fields.";
}
else
{
ErrorMessege.Text = "You have successfully add a movie!";
cmd.ExecuteNonQuery();
}
conn.Close();
}

Answer 2

The problem is that you are trying to use the entire textbox as the value to the parameter.
Change:
cmd.Parameters.AddWithValue("Title", Title);
to
cmd.Parameters.AddWithValue("Title", Title.Text);