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I have recently been working with Visual Studio 2015 and the following error occurred when I inserted a component in the HTML code. I think it's a silly mistake for lack of knowledge, but I have no idea how to solve it.

    
asked by anonymous 24.01.2018 / 18:16

1 answer

1

You have been missing the tag prefix

Example: 

<%@ Register assembly="DevExpress.Web.ASPxRichEdit.v17.1, Version=17.1.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" namespace="DevExpress.Web.ASPxRichEdit" tagprefix="dx" %>
<%@ Register assembly="DevExpress.Web.v17.1, Version=17.1.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" namespace="DevExpress.Web" tagprefix="dx" %>

Sources:

MSDN @Register

DevExpress: How to: Insert RTF text to a document

Addendum:

  

The following error appeared and I'm trying to fix it: To work properly,   DevExpress components require ASPxHttpHandlerModule registered in the   web.config file

According to the document reference, follow the instructions for

IIS (Classic Mode) 

<system.web>
    <httpHandlers>
      <add type="DevExpress.Web.ASPxHttpHandlerModule, DevExpress.Web.v17.2, Version=17.2.5.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" verb="GET"
      path="DX.ashx" validate="false" />
    </httpHandlers>
    <httpModules>
      <add type="DevExpress.Web.ASPxHttpHandlerModule, DevExpress.Web.v17.2, Version=17.2.5.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" name="ASPxHttpHandlerModule"/>
    </httpModules>
</system.web>

IIS (Integrated Mode) 

<system.web>
    <httpHandlers>
      <add type="DevExpress.Web.ASPxHttpHandlerModule, DevExpress.Web.v17.2, Version=17.2.5.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" verb="GET"
      path="DX.ashx" validate="false" />
    </httpHandlers>
    <httpModules>
      <add type="DevExpress.Web.ASPxHttpHandlerModule, DevExpress.Web.v17.2, Version=17.2.5.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" name="ASPxHttpHandlerModule"/>
    </httpModules>
</system.web>

<system.webServer>
    <validation validateIntegratedModeConfiguration="false" />
    <handlers>
      <add type="DevExpress.Web.ASPxHttpHandlerModule, DevExpress.Web.v17.2, Version=17.2.5.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" verb="GET" name="ASPxHttpHandlerModule"
      path="DX.ashx" preCondition="integratedMode" />
    </handlers>
    <modules>
      <add type="DevExpress.Web.ASPxHttpHandlerModule, DevExpress.Web.v17.2, Version=17.2.5.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" name="ASPxHttpHandlerModule"/>
    </modules>
</system.webServer>

Source: How to: Manually Register ASPxHttpHandlerModule

    
24.01.2018 / 18:37
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