2.In webdesktop:webtab, when edit the calendarcombo,it doesn't show the calendar.The calendar is not displayed.

Please check out my simple sample (enclosed as attachment, WebGrid9Samples.zip) of WebGrid 9 and WebDesktop 4. Open and view WebTabIFrameContent.aspx in browser. After the page rendered, then try to edit "Created Date" column.

The reported problem: the calendar is not displayed, doesn't persist. Screenshot Result2.png (enclosed as attachment) shows the result in my end.

3.When I use calendarcombo in the webgrid.The calendar is shown,but it covers the webgrid detail.

Please check out my simple sample (enclosed as attachment, WebGrid9Samples.zip) of WebGrid 9 and WebDesktop 4. Open and view CalendarComboGrid.aspx in browser. After the page rendered, then try to edit "Created Date" column.

The reported problem: "The calendar is shown,but it covers the webgrid detail.", doesn't persist. Screenshot Result3.png (enclosed as attachment) shows the result in my end.

1. In webdesktop:webtab, The webcombo is shown error.The webcombo is dropped above the webgrid,not below the webgrid.

Unfortunately, the provided information are insufficient for me to determine what the problem is.

I'm willing to advise you further but in order to do so I would need you to elaborate on your specific scenario and possibly give me a running simple sample and step-by-step guide that I can use to observe the problematic behavior.