如题
有很多FORM类 如 Form1 Form2........Formn 分别实例化了 a1 a2 ...an,如何写通用函数通过此函数调用a1 ....an
a1到an都是单实例的
a1..........an 通过不同的button 实现各自的SHOW
需要判断 an 是否为空是否注销了 如是 需要重新实例Form1 a1=new Form1();.....Formn an=new Formn();private void button_Click(object sender, EventArgs e)
{
if(a1==null||a1.Isdisposed)
{
a1=new Form1();
}
}怎么样能写个通用函数实现button按钮事件里的方法呢
有很多FORM类 如 Form1 Form2........Formn 分别实例化了 a1 a2 ...an,如何写通用函数通过此函数调用a1 ....an
a1到an都是单实例的
a1..........an 通过不同的button 实现各自的SHOW
需要判断 an 是否为空是否注销了 如是 需要重新实例Form1 a1=new Form1();.....Formn an=new Formn();private void button_Click(object sender, EventArgs e)
{
if(a1==null||a1.Isdisposed)
{
a1=new Form1();
}
}怎么样能写个通用函数实现button按钮事件里的方法呢
{
private Form1 alarmManager()
{} public static Form1 Instance = new Form1();
}
你每次需要的时候,就调用form1的时候,就用Form1.Instance就行了
//单例窗体,适当改动代码
protected void ShowMdiChild<TForm>() where TForm : Form, new()
{
Form child = this.MdiChildren.FirstOrDefault(frm => frm is TForm);
if (child == null)
{
child = new TForm();
child.MdiParent = this;
child.StartPosition = FormStartPosition.WindowsDefaultLocation;
child.WindowState = FormWindowState.Maximized;
child.Show(); }
else
{
child.StartPosition = FormStartPosition.WindowsDefaultLocation;
child.WindowState = FormWindowState.Maximized;
child.Select();
} }
//调用方法
private void button_Click(object sender, EventArgs e)
{
this.ShowMdiChild<a1>();
}好用哦
{
fun(an);
}private fun(ref 参数传入an)
{
if(an==null||an.isdisposed)
{
重新实例an;
}
an.show();
}fun()单实例怎么实现呢
public static T GetInstance<T>(string className){
if (arr[className] == null){
arr[className] = (T)System.Reflection.Assembly.Load("命名空间").CreateInstance("命名空间."+className);
}
return arr[className] as T;
}
static Hashtable arr = new Hashtable();
public static T GetInstance<T>() where T : class {
var t = typeof(T);
var k = t.FullName;
if (arr[k] == null){
arr[k] = (T)t.Assembly.CreateInstance(t.FullName);
}
return arr[k] as T;
}