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.NET Forum / ASP.NET / Building Controls / September 2004

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Why can't I override RenderBeginTag?

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Lisa - 22 Sep 2004 19:04 GMT
I'm trying to make a custom control.  I started off basing it on a
ListBox, but because of the bug in that control that prevents it from
rendering name/value pairs, I decided to use an HTMLSelect instead.

But when I changed it, I started getting an error:

Public Overrides Sub RenderBeginTag(ByVal writer As
System.Web.UI.HtmlTextWriter)

C:\Inetpub\wwwroot\BuildDir\UTILITIES\LLList\LLList.vb(39): 'Public
Overrides Sub RenderBeginTag(writer As System.Web.UI.HtmlTextWriter)'
cannot override 'Protected Overridable Sub RenderBeginTag(writer As
System.Web.UI.HtmlTextWriter)' because they have different access
levels.

Can anyone explain what's up here?  HTMLSelect does have a
RenderBeginTag method, so why can't I override it?  What are the
access levels here?

Thanks,
Lisa
John Saunders - 22 Sep 2004 20:24 GMT
> C:\Inetpub\wwwroot\BuildDir\UTILITIES\LLList\LLList.vb(39): 'Public
> Overrides Sub RenderBeginTag(writer As System.Web.UI.HtmlTextWriter)'
> cannot override 'Protected Overridable Sub RenderBeginTag(writer As
> System.Web.UI.HtmlTextWriter)' because they have different access
> levels.

The error message tells you the exact problem. You are trying to override a
"Protected" member with a "Public" one.

John Saunders

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