How to define scriptmanager timeout property in custom master page

I have a custom master page. When you create a custom master page then another page with similar name is automatically created by SharePoint.

For e.g. my master page name is mymaster.html so sharepoint created mymaster.master file with it. I want to increase the AsyncPostBackTimeout property of ScriptManager. I opened mymaster.html in SPD but didn't find any code there. Then I opened mymaster.master in SPD and I can see the ScriptManager code written as below.

<asp:ScriptManager id="ScriptManager" runat="server" --more code here-- />

Problem is, SPD doesn't allow you to edit .master page and I can't add this code in my .html master page file. How to edit this code in SPD?

February 6th, 2014 10:26am

Hi Frank,

How did you mean that you could not edit master page with SharePoint 2010 Designer?

You can edit master page by the followings:

  1. Open the site with SharePoint 2010 Designer
  2. Click on Master Pages on the left launch, then click on mymaster.master
  3. Edit the file, then you can add the code. If you cannot edit the file, please click on Advanced Mode in Editing section at the top

I hope this helps.

Thanks,

Wendy

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February 10th, 2014 3:32am

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