Can't place a breakpoint in asp.net master page file

Question

I have an MVC web application. I get an "Object reference not set to an instance of an object" error in line 16 below. It's a master page file. When I try to place a breakpoint in that line or anywhere in the file, I get a "this is not a valid location for a breakpoint" error. I have clicked on every line and I can't place a single breakpoint. I do have lines which have code only.

How do I place a breakpoint in this file?

Note: I can place breakpoints in code files. In some other aspx files, I can place a breakpoint in some code lines and some not. Does the inline code have to be in a special format to place a breakpoint? Using VS 2010 in Windows 7 64bit.

Code:

Line 14:   <div id="<%= Model.PageWidth %>" class="<%= Model.PageTemplate %>">
Line 15:     <div id="hd">
Line 16:       <h1><a href="/"><%= Model.Workspace.Title %></a></h1>
Line 17:       <h2><%= Model.Workspace.Subtitle %></h2>
Line 18:     </div>

score 2 · Answer 1 · edited May 23 '17 at 12:01

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Look at this post: Break points aspx pages

edited May 23 '17 at 12:01

Community

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answered Mar 22 '10 at 06:37

Dustin Laine

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There are other lines of code on the page. Why is VS not allowing breakpoints. MVC apps have lots of code in aspx pages. – Tony_Henrich Mar 22 '10 at 19:47
That's a real kludge to insert and remove that line every time I want to use a breakpoint. Are MVC developers happy with this process? – Tony_Henrich Mar 23 '10 at 03:41
I can't speak for MVC developers, but it also applies to webforms. – Dustin Laine Mar 23 '10 at 05:18

score 2 · Answer 2 · answered Jan 09 '12 at 21:15

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If you are developing locally the "Script Documents" will show up under "Windows Internet Explorer" and you can add the breakpoint on the dynamically generated file there.

answered Jan 09 '12 at 21:15

Sameer Alibhai

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Thank you :) Don't know why I cant set a breakpoint in the MasterPage, but this worked. – Eystein Bye Jul 15 '12 at 19:39

Can't place a breakpoint in asp.net master page file

2 Answers2

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