用户代码未处理无效的强制转换异常 [英] invalid cast exception was unhandled by user code

问题描述

我在制表符容器中的gridview中保留了按钮。虽然第一次加载其工作正常，但当我点击gridview中的下一页时它引发的错误为



无法转换类型'System.Web.UI的对象。 WebControls.ContentPlaceHolder'在以下行中键入'System.Web.UI.WebControls.GridViewRow'



，



GridViewRow gvr =（GridViewRow）（（Control）e.CommandSource）.NamingContainer;



我该怎么办？

Hi,

I have kept button inside gridview in tab container. While loading for first time its working fine but when i click next page in gridview its raising error as

"Unable to cast object of type 'System.Web.UI.WebControls.ContentPlaceHolder' to type 'System.Web.UI.WebControls.GridViewRow'"

in the following line,

GridViewRow gvr = (GridViewRow)((Control)e.CommandSource).NamingContainer;

what can i do?

推荐答案

检查互联网上提供的以下解决方案，我相信第一个链接可以解答您的问题。



http://stackoverflow.com/questions / 8919321 /无法投射对象的类型系统web-ui-webcontrols-gridview-in-asp-net [ ^ ]



出现错误 - 无法将'System.Web.UI.WebControls.ContentPlaceHolder'类型的对象强制转换为输入'System.Web.UI.WebControls.GridViewRow'。 [ ^ ]



但如果您的问题仍未解决，请使用一些代码段更新您的问题，以便我们可以进一步挖掘您的问题并找到准确的解决方案：）

Check following solutions available on internet and I believe the first link has the answer to your question.

http://stackoverflow.com/questions/8919321/unable-to-cast-object-of-type-system-web-ui-webcontrols-gridview-in-asp-net[^]

Error occured- "Unable to cast object of type 'System.Web.UI.WebControls.ContentPlaceHolder' to type 'System.Web.UI.WebControls.GridViewRow'."[^]

But if your problem is still not resolved, please update your question with some code snippet so that we can dig further to your problem and find the accurate solution :)

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