c# - 无法弄清楚我做错了什么 ASP.NET C#

Question

Server Error in '/asppub' Application. Compilation Error Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.

Compiler Error Message: CS1061: 'ASP.mis3200_unit4_ringu4l2_2_aspx' does not contain a definition for 'cblFees_SelectedIndexChanged' and no extension method 'cblFees_SelectedIndexChanged' accepting a first argument of type 'ASP.mis3200_unit4_ringu4l2_2_aspx' could be found (are you missing a using directive or an assembly reference?)

来源错误:

Line 112:    </p>
Line 113:    <p>
Line 114:        <asp:CheckBoxList ID="cblFees" runat="server" 
Line 115:            onselectedindexchanged="cblFees_SelectedIndexChanged" RepeatLayout="Flow" 
Line 116:            ValidationGroup="L2.2">

源文件:c:\Users\Ryan\Desktop\asppub\MIS3200\Unit4\RingU4L2.2.aspx 行:114

Answer 1

您需要在代码后面声明事件处理程序 cblFees_SelectedIndexChanged，如果您不使用它，只需从 asp:CheckBoxList 中删除 onselectedindexchanged="cblFees_SelectedIndexChanged" 标签。

通常 asp:CheckBoxList 不执行 postback 并且不需要 selectedindexchanged 事件。