[C#] winform 子窗体向父窗体传值

xiaoxiao2021-02-28  67

父窗框mainForm;子窗体childForm,利用事件进行传值 在子窗体中的操作:

public event EventHandler accept; public string value; private void btnStart_Click(object sender, EventArgs e) {   value=txtName.text;   if(accept!=null)    {     accept(this, EventArgs.Empty);//当事件触发时,传递自身引用    } }

在父窗体中的操作:

childForm frmChild=new childForm(); private void btnForm_Click(object sender, EventArgs e) {   if(frmChild.IsDisposed)   {     frmChild=new childForm();//时刻保持只有一个窗体显示   }   frmChild.accept += new EventHandler(Main_accept); frmChild.Show(); } //父窗体处理子窗体传来的值 public void Main_accept(object sender, EventArgs e) { childForm frmChild= (childForm)sender; string childValue = childForm .value;     txtUser.text=childValue; }

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