How to call stored PROCEDURE in C# code?

CREATE PROCEDURE [dbo].[sp_GetUserDetail]
    @userId INT
AS
BEGIN
    SELECT
        [dbo].[Account].[userName] AS 'User',
        [dbo].[Employee].[Email] AS 'Send Mail'
    FROM
        [dbo].[Account]
    INNER JOIN
        [dbo].[Employee]
    ON
        [dbo].[Employee].[User_Id] = [dbo].[Account].[ID]
    WHERE
        [dbo].[Account].[ID] = @userId
END

Con.open()
SqlCommand cmd = new SqlCommand("sp_GetUserDetail", con)

SqlConnection con = new SqlConnection("Data Source=ghrt\\se=CSharpUserLogin; Integrated Security=true");
            con.Open();
            SqlCommand cmd = new SqlCommand("sp_GetUserDetail", con);
            cmd.CommandType = CommandType.StoredProcedure;
            cmd.Parameters.Add(new SqlParameter("@userId" , '"+txtId.Text+"'  ));
            SqlDataAdapter sda = new SqlDataAdapter();
            sda.SelectCommand = cmd;
            DataTable dt = new DataTable();
            sda.Fill(dt);
            BindingSource bs = new BindingSource();
            bs.DataSource = dt;
            dgvEmployee.DataSource = bs;
            sda.Update(dt);