exponential to non-exponential value

Question

private void decrypt_Click(object sender, EventArgs e)  
      {           
           v = Convert.ToDouble (txtencrypt.Text);          
           t= Math.Pow(v, d);         
           MessageBox.Show(Convert.ToString(t));         
           MessageBox.Show(""+t.ToString());          
           MessageBox.Show("" + Convert.ToDecimal(n));      
           msg = Convert.ToInt16(Math.Pow(v,d) % Convert.ToDouble(n));       
           txtdecrypt.Text = Convert.ToString(msg);  
      }


/*
this is the code im working now for rsa decryption. the problem im getting is the pow function
return in exponential format, but i need the non exponential format of output.
can any one please help me to find out solution? */