我Form1自定义了一个类,
public class MyClass
{
public string username;
public string Username
{
get
{
return username;
}
set
{
username = value;
}
}
}
想在Form3那里用,我在form1一个按钮里写代码如下
MyClass mc = new MyClass();
mc.Username = userid.Text;
Form3处一label这样写
username1.Text = mc.Username;
提示mc缺少using指令或程序集引用,请问是怎么回事?自定义的类应该在哪里定义?使用要不要加什么东西?谢谢了
public class MyClass
{
public string username;
public string Username
{
get
{
return username;
}
set
{
username = value;
}
}
}
想在Form3那里用,我在form1一个按钮里写代码如下
MyClass mc = new MyClass();
mc.Username = userid.Text;
Form3处一label这样写
username1.Text = mc.Username;
提示mc缺少using指令或程序集引用,请问是怎么回事?自定义的类应该在哪里定义?使用要不要加什么东西?谢谢了
{
public static string username;
public static string Username
{
get
{
return username;
}
set
{
username = value;
}
}
}
在给Form3加一构造方法Form3(Username);构造时直接传过去
如:
Form1中:
MyClass mc = new MyClass();
mc.Username = userid.Text;
Form3 f = new Form3(mc.Username);
f.show();Form3中
Form3(Username)
{
username1.Text = mc.Username;
}
改为username1.Text = Username;
{
username1.Text = Username;
}
你要传进去这个参数啊,只要传了,不可能说没有
表示层,
业务逻辑层,
业务实体层,
数据保护层,
数据访问层,
和接口
private string userName;//是业务实体层 public string UserName
{
get
{
return userName;
}
set
{
userName = value;
}
}
{
...
public class Login_Form : System.Windows.Forms.Form
{
public class MyClass
{
public string username;
public string Username
{
get
{
return username;
}
set
{
username = value;
}
}
}
}
...
}这是Form3的namespace 学生宿舍管理系统
{
public class Pwdedit_Form : System.Windows.Forms.Form
{
...
private void username_Click(object sender, System.EventArgs e)
{
username1.Text = mc.Username;
}
...
}
}请问要怎么改,谢谢啊~~~
{
MyClass mc = new MyClass();
mc.Username = userid.Text;
}MyClass mc = new MyClass();这句放在外面也是不行的,不知道是不是放错地方
主窗体using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;namespace WinFormExample
{
public partial class MainForm : Form
{
public MainForm()
{
InitializeComponent();
OtherForm form = new OtherForm();
form.recorder += this.ShowCount;
form.Show(); Form1 f1 = new Form1();
form.recorder += f1.showCount;
f1.Show();
}
private void ShowCount(string count)
{
this.label1.Text = "你己点击窗体" + count + "次";
}
}
}
A窗体:using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;namespace WinFormExample
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
public void showCount(string showCounter)
{
this.label1.Text = "你己点击窗体" + showCounter + "次";
} }
}B窗体using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;namespace WinFormExample
{
public partial class OtherForm : Form
{
public delegate void ShowInfo(string info);
public ShowInfo recorder;
private int counter = 0;
public OtherForm()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
counter++;
if (recorder != null)
recorder(counter.ToString());
}
}
}