从DataSourceControl继承不会产生IDataSource [英] Inheriting from DataSourceControl does not produce an IDataSource

问题描述

我正在尝试创建自定义数据源控件.

我一直在关注这封信(我认为...).

http://www.nikhilk.net/DataSourceControlBasics.aspx [


这对我来说似乎很奇怪，因为我的数据源继承自DataSourceControl，后者又实现了IDataSource.即使我在自定义数据源中显式实现IDataSource，也没有任何区别.

我的标记是:

I am trying to create a custom datasource control.

I have been following this article to the letter (I think...).

http://www.nikhilk.net/DataSourceControlBasics.aspx[^]

I have a skeleton / basic implementation of my datasource, however when I declare it in the markup and try to statically bind it to a gridview, I receive the following error:

The DataSourceID of ''grdVw'' must be the ID of a control of type IDataSource


This seems extremely strange to me, since my datasource inherits from DataSourceControl, which in turn implements IDataSource. Even if I explicitly implement IDataSource in my custom datasource, it makes no difference.

My Markup is:

<DataBrokerDataSource  ID="objSrcDBroker" runat="server" />
   
<div>
    <asp:GridView ID="grdVw" DataSourceID="objSrcDBroker" DataMember="Table0" runat="server">
    </asp:GridView>
</div>

<div>
    <asp:GridView id="grdVw2" DataSourceID="objSrcDBroker" DataMember="Table1" runat="server">
    </asp:GridView>
</div>

我的控制权是:

And my control is:

Public Class CustomDataSource
    Inherits DataSourceControl
    Implements IDataSource  'Have tried with this statement included AND excluded = same result

    Protected Overrides Function GetView(ByVal viewName As String) As System.Web.UI.DataSourceView Implements IDataSource.GetView
        'Code here
    End Function

    Protected Overrides Function GetViewNames() As System.Collections.ICollection Implements IDataSource.GetViewNames
        'Code here
    End Function

End Class

我们将不胜感激.

Any help and suggestion will be very much appreciated.

推荐答案

我将数据源代码移至其他程序集并注册了该程序集，从而解决了该问题.尝试使用没有标签前缀的控件很愚蠢.

I moved the datasource code to a different assembly and registered the assembly and this fixed the problem. Trying to use the control without a tag prefix was silly.

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