ModalDialog cannot pop up a new window. When refreshing the parent window, the child window pops up automatically.

gqy1906

There are two pages
1.userlist.aspx
2.user_info.aspx
I wrote in userlist.asp.cs
private void btn_Add_Click (object sender, System.EventArgs e)
{
Response.Write ("<script> javascript: window.showModalDialog ('user_info.aspx', '_ blank', 'scroll: 0; status: 0; help: 0; dialogWidth: 290px; dialogHeight: 165px') </ script> ");
}
When you click on the ammonium button, the child window appears. But the parent window has no content to display. What you want now is: when you open the child window, the parent window is also there.

苹果小刀

Response.Write ("") is written to this window, so there is no content, you can use this method
Page.ReGISterStartupScript ();

as follows :
Page.ReGISterStartupScript ("MsgSecretary", "JAVAscript: if (confirm ('Please confirm whether to delete this record!') == false) return false;")

everever30

Page.RegisterStartupScript ("ShowWindow", "<script> javascript: window.showModalDialog ('user_info.aspx', '_ blank', 'scroll: 0; status: 0; help: 0; dialogWidth: 290px; dialogHeight: 165px') </ script> ")