Question

我有一个mdi父表单，我在运行时以mdi子表单的形式打开我的其他表单：

private void winAppToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Upload objWA = new Upload();
            objWA.MdiParent = this;
            objWA.Show();
            //objWA.WindowState = FormWindowState.Maximized;
        }

        private void userInfoToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Reports objUI = new Reports();
            objUI.MdiParent = this;
            objUI.Show();
            //objUI.WindowState = FormWindowState.Maximized;
        }

但问题是：当前表单打开时，用户可以打开另一个表单，并且可以重复多次，以便打开每个表单，以便在用户打开新的子表单之前关闭上一个子表单的代码？ / p>

屏幕截图供参考 if we see the image my upload and reports forms both are getting opened on one another but it should only show the currently opened form

Answer 1

public void DisposeAllButThis(Form form){
foreach (Form frm in this.MdiChildren)
{
    if (frm.GetType() == form.GetType() 
        && frm != form)
    {
        frm.Dispose();
        frm.Close();
    }
}}

得到了这个： C# loop through all MDI childer and close all other forms except the current

Answer 2

try {
            JSONArray jarr=new JSONArray(response);   // response is whole json response
            for (int i=0;i<jarr.length();i++){
                JSONObject jobj=jarr.getJSONObject(i);   
                String primary_photo=jobj.getString("primary_photo");
            }
        } catch (JSONException e) {
            e.printStackTrace();
        }

让我知道它是否有效，因为我刚刚完成了

如何使用c＃在mdi中单击另一个子表单关闭上一个子表单

2 个答案: