关于模态窗口(showModalDialog)的专题!

1.模态窗口的打开,model window open
2.模态窗口的关闭,model window close
3.模态窗口的传递参数,model window  get valuse
4.其他....,other ..

1.window.showModalDialog("DialogPage.aspx","newwin","dialogHeight: 200px; dialogWidth: 150px; dialogTop: 458px; dialogLeft: 166px; edge: Raised; center: Yes; help: Yes; resizable: Yes; status: Yes;");

2.window.close();

3.传值
ParentPage.aspx:
window.showModalDialog("DialogPage.aspx?para1=aaa&para2=bbb");

DialogPage.aspx:
string str1=Request.QueryString["para1"].toString();
string str2=Request.QueryString["para2"].toString();

返回值
DialogPage.aspx:
window.returnValue="aaa";

ParentPage.aspx:
var str=window.showModalDialog("DialogPage.aspx");

4.
aspx页面在showmodeldialog情况下为什么一提交就重新打开一个页面?
showmodaldialog打开的页面中在<head></head>之间加入一行：<base target="_self">