SharePoint 页面 Web Part重复出现

最近同事的项目中，

打开一个页面的时候，发现

The maximum number of Web Parts for all zones on this page has been exceeded.

如此信息，使用SPD打开页面的时候，发现同一WebPart重复10多次，

 

那么一个页面可以有多少个Web Part呢？

The limit is customizable in web.config file,
50 (default) - http://technet.microsoft.com/en-us/library/cc262787.aspx
100 (recommended max) - http://technet.microsoft.com/en-us/library/cc287743.aspx

 

最终的原因参考

http://vivek-soni.blogspot.com/2010/08/duplicate-web-parts-shown-in-sharepoint.html

 

Issue:
Using the same
web part zone GUID multiple times whether in same page layout or a different
page layout would result into the web part being shown up multiple times.

Resolution:

Ensure that
every web part zone and web part in your page layouts have a unique GUID across
your site collection.