对,所以我有一个名为“ModbusMaster”的用户控件和一个带有字面上一个按钮的表单..
当我单击按钮时,我想更改控件上标签的文本..
然而什么也没发生。。
这是主要形式
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace ModbusMaster_2._0
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
ModbusMaster mb = new ModbusMaster();
public void button1_Click(object sender, EventArgs e)
{
mb.openPort("wooooo");
}
}
}
我正在调用方法 openPort 并将字符串“wooo”传递给它..
这是我的控制
文本没有更新:(:(:(
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO.Ports;
namespace ModbusMaster_2._0
{
public partial class ModbusMaster : UserControl
{
string portName = "COM1"; //default portname
int timeOut = 300; //default timeout for response
SerialPort sp = new SerialPort();
public ModbusMaster()
{
InitializeComponent();
}
protected override void OnPaint(PaintEventArgs e)
{
portLabel.Text = portName;
}
public void openPort(string port)
{
statusLabel.Text = port;
}
/*
* Properties
*/
public string SerialPort //Set portname
{
get { return portName; }
set { portName = value;}
}
public int TimeOut //Set response timeout
{
get { return timeOut; }
set { timeOut = value; }
}
}
}