启用级联下拉列表后应用程序中的问题 [英] Problem in the application after enabling cascading dropdownlist

问题描述

我在gridview中启用了级联下拉列表选项并且工作正常。当我尝试选择带有值的下拉列表并添加新行时，它显示无效的回发或回调参数。使用< 启用事件验证 pages     enableEventValidation   =  true  /  > 或<％@    页    EnableEventValidation   =  true   ％>  in为了安全起见，此功能验证了回发或回调的参数e通风口源自最初呈现它们的服务器控件。如果数据有效且符合预期，请使用ClientScriptManager.RegisterForEventValidation方法注册回发或回调数据以进行验证。。
 
请帮我解决这个问题。保存按钮时也是如此我也建议你去简单的 DropDownList 。

不要去Cascade和所有。



处理 SelectedIndexChanged 第一个 DropDownList 并在其中绑定另一个 DropDownList 。就这么简单。

Hi,
I've enabled the cascading dropdownlist option in the gridview and its working fine. When i'm trying to select the dropdownlist with the values and adding the new rows, then it is showing "Invalid postback or callback argument.  Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page.  For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them.  If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.".

Please help me on this. The same is occuring when saving the button too.

解决方案

So, I would suggest you to go for simple DropDownList. Don't go for Cascade and all.

Handle the SelectedIndexChanged Event of first DropDownList and inside that Bind the other DropDownList. As simple as that.

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