Eilon Lipton's Blog - All Comments

Ajax Error: Sys.WebForms.PageRequestManagerParserErrorException | DIGG LINK

Ajax Error: Sys.WebForms.PageRequestManagerParserErrorException | DIGG LINK — Tue, 31 Jan 2012 20:02:19 GMT

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Bind eval | Mummabearcards

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re: Sys.WebForms.PageRequestManagerParserErrorException - what it is and how to avoid it

Leszek Charlotte — Thu, 12 Jan 2012 15:43:34 GMT

Same problem, after moving controls around page (cut and paste). Solution: remove all copied controls and add them one by one from toolbar. Everything works like a charm.

re: Sys.WebForms.PageRequestManagerParserErrorException - what it is and how to avoid it

SSA — Tue, 03 Jan 2012 12:17:42 GMT

Just found another workaround,as I had no luck on none of above symptoms/solutions:

Pipeline mode change, integrated to Classic mode.

re: MVC: Unit testing controller actions that use TempData

Paul — Tue, 27 Dec 2011 19:10:40 GMT

Did this, "Making TempData easier to unit test is on our list of improvements" make it into MVC3? Cannot figure out how to test a custom Action Filter that uses TempData.

re: Sys.WebForms.PageRequestManagerParserErrorException - what it is and how to avoid it

Chaitali — Tue, 27 Dec 2011 09:11:08 GMT

ScriptManager scriptManager = ScriptManager.GetCurrent(Page);

if (scriptManager != null)

{

scriptManager.RegisterPostBackControl(printBtn);

}

This code resolve this problem.

re: Sys.WebForms.PageRequestManagerParserErrorException - what it is and how to avoid it

Sushil — Tue, 20 Dec 2011 10:27:45 GMT

I've solved my PageRequestManagerParserErrorException errors

Write below code in Page load()

{ this.ToolkitScriptManager1.RegisterPostBackControl(this.btnProjectDownload);

}

<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Always">

<grid>code.............here

</ContentTemplate>

<asp:PostBackTrigger ControlID="btnProjectDownload" />

</Triggers>

</asp:UpdatePanel>

<asp:Button ID="btnProjectDownload" runat="server" Text="Download" OnClick="btnProjectDownload_Click" />

Note: my page had the Buttons initiating the UpdatePanel refresh outside the UpdatePanel, and that I declared an PostBackTrigger in the UpdatePanel for each Button Click event.

Regards,

Sushil Kumar

re: Sys.WebForms.PageRequestManagerParserErrorException - what it is and how to avoid it

sen_o_sen@yahoo.co.in — Sat, 17 Dec 2011 12:16:46 GMT

Please check your all control names are unique. this is also another factor for this error. usually occurs when we replicating the same control structures.

Senthil

Bangalore

re: Sys.WebForms.PageRequestManagerParserErrorException - what it is and how to avoid it

Mick Woods — Thu, 15 Dec 2011 10:01:21 GMT

I was getting the error when exporting grids to excel from pages using master pages. I tried all of the above but none of it worked for me. In the end I got around the problem by re-opening the window from the export button click event and passing an 'export' flag in the query string. This meant the call was no longer a postback and the problem disappeared.

eg. - in the button click event:

string LScript = "window.open('thispage.aspx?DoExport=Yes','_self');";

ScriptManager.RegisterClientScriptBlock(BtnExport, typeof(Page), "MyScript", LScript, true);

and in the page load:

if (!IsPostBack)

{

if (Request.QueryString["DoExport"] == "Yes"

DoExport();

}

Your DoExport method contains what was previouisly in the export button click event handler.

Thanks to Eilon and everyone else who posted fixes. Hope mine helps someone too :)

re: Opening an ASP.NET MVC project without having ASP.NET MVC installed: The project type is not supported by this installation

tjanovsky — Sat, 10 Dec 2011 15:07:15 GMT

ASP.NET MVC4 Project Guid is {E3E379DF-F4C6-4180-9B81-6769533ABE47}