Type misconfiguration error

using System;
using System.Drawing;
using System.Windows.Forms;
using System.IO;
using System.Drawing.Imaging;
using System.Data.SqlClient;
using System.Data;
using System.Text.RegularExpressions;


namespace Banco_de_Imagens_Beatriz
{
    public partial class EcranSeleccaoImagens : Form
    {
        Bitmap bmp;

        SqlConnection con = new SqlConnection("Data Source = localhost\SQLEXPRESS;Initial Catalog = Banco_Imagens; Persist Security Info=True;User ID = sa; Password=12QWaszx");


        public EcranSeleccaoImagens()
        {
            InitializeComponent();
            TextBoxiddiag.ReadOnly = true;
            TextBoxidlesao.ReadOnly = true;
            TextBoxidlesao1.ReadOnly = true;
            TextBoxidlesao2.ReadOnly = true;
            TextBoxidlesao3.ReadOnly = true;
            TextBoxidlesao4.ReadOnly = true;
            //TextBoxidtipolesao.ReadOnly = true;
            TextBoxDiagnostico.ReadOnly = true;
            TextBoxLesao.ReadOnly = true;
            //TextBoxTipoLesao.ReadOnly =true;
            TextBoxiddiag.BackColor = SystemColors.Window;
            TextBoxidlesao.BackColor = SystemColors.Window;
            TextBoxidlesao1.BackColor = SystemColors.Window;
            TextBoxidlesao2.BackColor = SystemColors.Window;
            TextBoxidlesao3.BackColor = SystemColors.Window;
            TextBoxidlesao4.BackColor = SystemColors.Window;
            //TextBoxidtipolesao.BackColor = SystemColors.Window;
            TextBoxDiagnostico.BackColor = SystemColors.Window;
            TextBoxLesao.BackColor = SystemColors.Window;
            //TextBoxTipoLesao.BackColor = SystemColors.Window;
        }

        private void ComboBox3_SelectedDiagnosticoChanged(object sender, EventArgs e)
        {

        }
        private void ComboBox1_SelectedLesaoChanged(object sender, EventArgs e)
        {

        }

        private void TextBox3_TextChanged(object sender, EventArgs e)
        {

        }

        private void ComboBox2_SelectedIndexChanged(object sender, EventArgs e)
        {

        }

        private void PictureBoxSeleccionar_Imagem_Click(object sender, EventArgs e)
        {

        }

        private void TextBox2_TextChanged(object sender, EventArgs e)
        {

        }

        //TextBox Diagnostico
        private void BotaoSeleccDiag_Click(object sender, EventArgs e)
        {
            EcranDiagnostico frm = new EcranDiagnostico();
            frm.Show();
            frm.VisibleChanged += FormVisibleChangedD;
        }
        private void FormVisibleChangedD(object sender, EventArgs e)
        {
            EcranDiagnostico frm = (EcranDiagnostico)sender;
            if (!frm.Visible)
            {
                TextBoxDiagnostico.Text = frm.ReturnText;
                TextBoxiddiag.Text = frm.ReturnId.ToString();
                frm.Dispose();
            }
        }

        private void BotaoSeleccionar_Click(object sender, EventArgs e)
        {
            OpenFileDialog open = new OpenFileDialog();

            if (open.ShowDialog() == DialogResult.OK)
            {
                string nome = open.FileName;
                bmp = new Bitmap(nome);
                PictureBox1.Image = bmp;
            }
        }

        private void BotaoSair_Click(object sender, EventArgs e)
        {
            Close();
        }

        private void BotaoGravar_Click(object sender, EventArgs e)
        {
            string sql = "select * from Banco_Imagens.tb_imagem";

            MemoryStream memory = new MemoryStream();

            // Verificar se alguma imagem foi seleccionada

            if (bmp == null)
            {
                MessageBox.Show("Por favor seleccione uma imagem, antes de gravar o registo.");
            }
            else
            {
                bmp.Save(memory, ImageFormat.Bmp);
            }

            byte[] foto = memory.ToArray();

            SqlCommand comando = new SqlCommand("insert into tb_imagem (imagem,nome_imagem,descr_imagem,iddiag,idlesao,idlesao1,idlesao2,idlesao3,idlesao4,ND) values (@imagem,@nome_imagem,@descr_imagem,@iddiag,@idlesao,@idlesao1,@idlesao2,@idlesao3,@idlesao4,@ND)", con);
            SqlCommand cmdInteiro = new SqlCommand(sql, con);

            SqlParameter imagem = new SqlParameter("@imagem", SqlDbType.VarBinary);
            SqlParameter nome_imagem = new SqlParameter("@nome_imagem", SqlDbType.VarChar);
            SqlParameter descr_imagem = new SqlParameter("@descr_imagem", SqlDbType.VarChar);
            SqlParameter ND = new SqlParameter("@ND", SqlDbType.Int);
            SqlParameter iddiag = new SqlParameter("@iddiag", SqlDbType.Int);
            SqlParameter idlesao = new SqlParameter("@idlesao", SqlDbType.Int);
            SqlParameter idlesao1 = new SqlParameter("@idlesao1", SqlDbType.Int);
            SqlParameter idlesao2 = new SqlParameter("@idlesao2", SqlDbType.Int);
            SqlParameter idlesao3 = new SqlParameter("@idlesao3", SqlDbType.Int);
            SqlParameter idlesao4 = new SqlParameter("@idlesao4", SqlDbType.Int);

            cmdInteiro.CommandType = CommandType.StoredProcedure;

            comando.Parameters.AddWithValue("@imagem", SqlDbType.VarBinary);
            comando.Parameters["@imagem"].Value = foto;
            comando.Parameters.AddWithValue("@nome_imagem", SqlDbType.VarChar);
            comando.Parameters["@nome_imagem"].Value = TextBoxNomeImagem.Text;
            comando.Parameters.AddWithValue("@descr_imagem", SqlDbType.VarChar);
            comando.Parameters["@descr_imagem"].Value = TextBoxDescrImagem.Text;
            comando.Parameters.AddWithValue ("@iddiag", SqlDbType.Int);
            comando.Parameters["@iddiag"].Value = TextBoxiddiag.Text;
            comando.Parameters.AddWithValue ("@idlesao", SqlDbType.Int);
            comando.Parameters["@idlesao"].Value = TextBoxidlesao.Text;
            comando.Parameters.AddWithValue ("@idlesao1", SqlDbType.Int);
            comando.Parameters["@idlesao1"].Value = TextBoxidlesao1.Text;
            comando.Parameters.AddWithValue ("@idlesao2", SqlDbType.Int);
            comando.Parameters["@idlesao2"].Value = TextBoxidlesao2.Text;
            comando.Parameters.AddWithValue ("@idlesao3", SqlDbType.Int);
            comando.Parameters["@idlesao3"].Value = TextBoxidlesao3.Text;
            comando.Parameters.AddWithValue ("@idlesao4", SqlDbType.Int);
            comando.Parameters["@idlesao4"].Value = TextBoxidlesao4.Text;
            comando.Parameters.AddWithValue("@ND", SqlDbType.Int);
            comando.Parameters["@ND"].Value = TextBoxND.Text;
            //cmdInteiro.Parameters.AddWithValue("@ND", SqlDbType.Int);
            //cmdInteiro.Parameters["@ND"].Value = TextBoxND.Text;
            //comando.Parameters.AddWithValue ("@idtipolesao", SqlDbType.Int);
            //cmd.Parameters["@idtipolesao"].Value = TextBoxidtipolesao;

            imagem.Value = foto;
            nome_imagem.Value = TextBoxNomeImagem.Text;
            descr_imagem.Value = TextBoxDescrImagem.Text;
            iddiag.Value = Int32.Parse(TextBoxiddiag.Text);
            idlesao.Value = Int32.Parse(TextBoxidlesao.Text);
            idlesao1.Value = Int32.Parse(TextBoxidlesao1.Text);
            idlesao2.Value = Int32.Parse(TextBoxidlesao2.Text);
            idlesao3.Value = Int32.Parse(TextBoxidlesao3.Text);
            idlesao4.Value = Int32.Parse(TextBoxidlesao4.Text);
            ND.Value = Int32.Parse(TextBoxND.Text);
            //idtipolesao.Value = TextBoxidtipolesao.Text;


            // Verificar se o Número de Doente só contém inteiros

            if (Regex.IsMatch(TextBoxND.Text, @"^\D*$"))
            {
                //Show message and clear input.  
                MessageBox.Show("Por favor introduza só algarismos.");
                TextBoxND.Clear();
            }
            else
            {
                comando.Parameters.Add (imagem);
                comando.Parameters.Add(nome_imagem);
                comando.Parameters.Add(descr_imagem);
                comando.Parameters.Add(iddiag);
                comando.Parameters.Add(idlesao);
                comando.Parameters.Add(idlesao1);
                comando.Parameters.Add(idlesao2);
                comando.Parameters.Add(idlesao3);
                comando.Parameters.Add(idlesao4);
                comando.Parameters.Add(ND);
                //comando.Parameters.Add(idtipolesao);
            }
            try
            {
                con.Open();
                comando.ExecuteNonQuery();
                MessageBox.Show("Imagem Gravada!");

                PictureBox1.Image = null;
                TextBoxNomeImagem.Text = "";
                TextBoxDescrImagem.Text = "";
                TextBoxiddiag.Text = "";
                TextBoxDiagnostico.Text = "";
                TextBoxLesao.Text = "";
                TextBoxLesao1.Text = "";
                TextBoxLesao2.Text = "";
                TextBoxLesao3.Text = "";
                TextBoxLesao4.Text = "";
                TextBoxND.Text = "";
                //TextBoxTipoLesao.Text = "";
                //TextBoxiddiag.Text = "";
                //TextBoxidlesao.Text = "";
                //TextBoxidlesao1.Text = "";
                //TextBoxidlesao2.Text = "";
                //TextBoxidlesao3.Text = "";
                //TextBoxidlesao4.Text = "";
                ////TextBoxidtipolesao.Text = "";


            }
            catch (Exception E)
            {
                MessageBox.Show(E.Message);
            }
            finally
            {
                con.Close();
            }
        }
        private void BotaoApagar_Click(object sender, EventArgs e)
        {
            SqlCommand comando = new SqlCommand("DELETE * FROM tb_imagem", con);
            SqlDataReader myReader;

            try
            {
                con.Open();
                myReader = comando.ExecuteReader();
            }
            catch (SqlException E)
            {
                //Log exception
                //Display Error message
                MessageBox.Show(E.Message);
            }
        }
        private void TextBoxDiagImagem_TextChanged(object sender, EventArgs e)
        {

        }

        private void TextBoxFKdiag_TextChanged(object sender, EventArgs e)
        {

        }

        private void TextBoxFKlesao_TextChanged(object sender, EventArgs e)
        {

        }

        private void TextBoxFKtipolesao_TextChanged(object sender, EventArgs e)
        {

        }

        private void TextBoxNomeImagem_TextChanged(object sender, EventArgs e)
        {

        }

        private void EcranSeleccaoImagens_Load(object sender, EventArgs e)
        {

        }

        private void Diagnostico_Text_Box_TextChanged(object sender, EventArgs e)
        {

        }

        private void Lesao_Text_Box_TextChanged(object sender, EventArgs e)
        {

        }

        private void Tipo_Lesao_Text_Box_TextChanged(object sender, EventArgs e)
        {

        }

        private void TextBoxND_TextChanged(object sender, EventArgs e)
        {

        }

        // TextBox Lesao
        private void BotaoSeleccLesao_Click(object sender, EventArgs e)
        {
            EcranLesao frm = new EcranLesao();
            frm.Show();
            frm.VisibleChanged += FormVisibleChangedL;
        }
        private void FormVisibleChangedL(object sender, EventArgs e)
        {
            EcranLesao frm = (EcranLesao)sender;
            if (!frm.Visible)
            {
                TextBoxLesao.Text = frm.ReturnText;
                TextBoxidlesao.Text = frm.ReturnId.ToString();
                frm.Dispose();
            }
        }
        private void BotaoSeleccLesao1_Click(object sender, EventArgs e)
        {
            EcranLesao frm = new EcranLesao();
            frm.Show();
            frm.VisibleChanged += FormVisibleChangedL1;
        }
        private void FormVisibleChangedL1(object sender, EventArgs e)
        {
            EcranLesao frm = (EcranLesao)sender;
            if (!frm.Visible)
            {
                TextBoxLesao1.Text = frm.ReturnText;
                TextBoxidlesao1.Text = frm.ReturnId.ToString();
                frm.Dispose();
            }
        }

        private void BotaoSeleccLesao2_Click(object sender, EventArgs e)
        {
            EcranLesao frm = new EcranLesao();
            frm.Show();
            frm.VisibleChanged += FormVisibleChangedL2;
        }
        private void FormVisibleChangedL2(object sender, EventArgs e)
        {
            EcranLesao frm = (EcranLesao)sender;
            if (!frm.Visible)
            {
                TextBoxLesao2.Text = frm.ReturnText;
                TextBoxidlesao2.Text = frm.ReturnId.ToString();
                frm.Dispose();
            }
        }
        private void BotaoSeleccLesao3_Click(object sender, EventArgs e)
        {
            EcranLesao frm = new EcranLesao();
            frm.Show();
            frm.VisibleChanged += FormVisibleChangedL3;
        }
        private void FormVisibleChangedL3(object sender, EventArgs e)
        {
            EcranLesao frm = (EcranLesao)sender;
            if (!frm.Visible)
            {
                TextBoxLesao3.Text = frm.ReturnText;
                TextBoxidlesao3.Text = frm.ReturnId.ToString();
                frm.Dispose();
            }
        }
        private void BotaoSeleccLesao4_Click(object sender, EventArgs e)
        {
            EcranLesao frm = new EcranLesao();
            frm.Show();
            frm.VisibleChanged += FormVisibleChangedL4;
        }
        private void FormVisibleChangedL4(object sender, EventArgs e)
        {
            EcranLesao frm = (EcranLesao)sender;
            if (!frm.Visible)
            {
                TextBoxLesao4.Text = frm.ReturnText;
                TextBoxidlesao4.Text = frm.ReturnId.ToString();
                frm.Dispose();
            }
        }
    }
}

I think the problem is related to the type of equalization you do. For example:

command.Parameters ["@ idlesao4"]. Value = TextBox.Text;

If ["@ idlesao4"] is of type Int the problem can be here.

Try: Parameters ["@ idlesao4"]. Value = Int32.Parse (TextBox.Text);

See this example:

using(SqlConnection connection = new SqlConnection(_connectionString) 
{
   String query = "INSERT INTO dbo.SMS_PW (id,username,password,email) 
   VALUES (@id,@username,@password, @email)";

using(SqlCommand command = new SqlCommand(query, connection))
{
    command.Parameters.AddWithValue("@id", "abc");
    command.Parameters.AddWithValue("@username", "abc");
    command.Parameters.AddWithValue("@password", "abc");
    command.Parameters.AddWithValue("@email", "abc");

    connection.Open();
    int result = command.ExecuteNonQuery();

    // Check Error
    if(result < 0)
        Console.WriteLine("Error inserting data into Database!");
}

Retired from here