Error converting VarChar into Int

MemberID | MemberName | Type

ALTER PROCEDURE [dbo].[SavetblMember]

(
@MemberID varchar (50),
@MemberName varchar (50),
@Type varchar (50)
)


as

INSERT INTO tblMember(MemberID, MemberName, Type)
VALUES(@MemberID, @MemberName, @Type)

private void btnAdd_Click(object sender, EventArgs e)
        {
            try
            {
                string c = ConfigurationManager.ConnectionStrings["Constr"].ConnectionString;
                SqlConnection conn = new SqlConnection(c);
                SqlCommand cmd = new SqlCommand("SavetblMember", conn);
                conn.Open();
                cmd.ExecuteNonQuery();
                cmd.Parameters.Add("@MemberID", SqlDbType.VarChar, 50).Value = metroTextBox1.Text;
                cmd.Parameters.Add("@MemberName", SqlDbType.VarChar, 50).Value = metroTextBox2.Text;
                cmd.Parameters.Add("@Type", SqlDbType.VarChar, 50).Value = CombMemType.Text;
                conn.Close();
                storedprocMem();

            }

            catch (SqlException ex)
            {
                MetroMessageBox.Show(this, "Error" + ex.Message);
            }
        }