Did you download `Redmine.Net.Api` **dll** from the web? If yes, then browse to it with Windows Explorer, right click on it and choose properties. There you should click &#39;Unblock&#39;. It might have been blocked for some reasons.

![enter image description here][1]


  [1]: http://i.stack.imgur.com/E468X.png

Found two items related to this one is saying to checking if your file is blocked (with some changed to your app.config) and another with changes to your project file. Hope this helps.

[Link1](https://stackoverflow.com/questions/3007190/vsts-2010-sgen-error-could-not-load-file-or-assembly-exception-from-hresult)

[Link2](https://stackoverflow.com/questions/2999230/vs2010-assembly-load-error)

I found the solution to this problem following the accepted answer in this [post][1]:

Use [FuseLogVw][2] to keep track of where your program is breaking and how it is breaking. This application has a table with lots of traces. Find out where the fault application is called and see what is wrong with it.

  [1]: https://stackoverflow.com/questions/4469929/could-not-load-file-or-assembly-or-one-of-its-dependencies
  [2]: http://msdn.microsoft.com/en-us/library/e74a18c4%28v=vs.71%29.aspx


That occurred to me when I was debugging the remote code in release mode; changed it to debug mode and got it fixed.

Add `&lt;loadFromRemoteSources enabled=&quot;true&quot; /&gt;` to your app.config file as shown below.

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot; ?&gt;
    &lt;configuration&gt;
	    &lt;runtime&gt;
		    &lt;loadFromRemoteSources enabled=&quot;true&quot; /&gt;
	    &lt;/runtime&gt;
        ...
    &lt;/configuration&gt;
    

Please correct me if I am wrong.
Both can be used for **Data Binding**.

The question is when to use @ModelAttribute?

    @RequestMapping(value=&quot;/owners/{ownerId}/pets/{petId}/edit&quot;, method = RequestMethod.POST)
    public String processSubmit(@ModelAttribute Pet pet) { }

In addition, when to use @RequestBody?

    @RequestMapping(value = &quot;/user/savecontact&quot;, method = RequestMethod.POST
    public String saveContact(@RequestBody Contact contact){ }

According to my understanding both serves the similar purpose.

Thanks!!

Spring: @ModelAttribute VS @RequestBody

I have a dataframe, df, that has some columns of type float64, while the others are of object. Due to the mixed nature, I cannot use 

    df.fillna(&#39;unknown&#39;) #getting error &quot;ValueError: could not convert string to float:&quot;

as the error happened with the columns whose type is float64 (what a misleading error message!)

so I&#39;d wish that I could do something like 

    for col in df.columns[&lt;dtype == object&gt;]:
        df[col] = df[col].fillna(&quot;unknown&quot;)

So my question is if there is any such filter expression that I can use with df.columns?

I guess alternatively, less elegantly, I could do:  

     for col in df.columns:
            if (df[col].dtype == dtype(&#39;O&#39;)): # for object type
                df[col] = df[col].fillna(&#39;&#39;) 
                # still puzzled, only empty string works as replacement, &#39;unknown&#39; would not work for certain value leading to error of &quot;ValueError: Error parsing datetime string &quot;unknown&quot; at position 0&quot; 

I also would like to know why in the above code replacing &#39;&#39; with &#39;unknown&#39; the code would work for certain cells but failed with a cell with the error of &quot;ValueError: Error parsing datetime string &quot;unknown&quot; at position 0&quot; 

Thanks a lot!

Yu

Find all columns of dataframe in Pandas whose type is float, or a particular type?

I have a small project in C# that uses two external dll files. One is the Redmine.Net.Api.dll and the other is NLog.dll. I&#39;m using Visual Studio 2010. I added both files as Reference to my project. The problem is that when I run the project in Debug mode, it compiles, but when I switch to Release, it says:

&gt; Error	1	Could not load file or assembly
&gt; &#39;file:///C:\project\lib\Redmine.Net.Api.dll&#39; or one of its
&gt; dependencies. Operation is not supported. (Exception from HRESULT:
&gt; 0x80131515)	C:\project\SGEN	project

How can I fix this?

Visual Studio &quot;Could not load file or assembly. Operation is not supported&quot; error in Release mode

I have a small project in C# that uses two external dll files. One is the Redmine.Net.Api.dll and the other is NLog.dll. I'm using Visual Studio 2010. I added both files as Reference to my project. The problem is that when I run the project in Debug mode, it compiles, but when I switch to Release, it says:
> Error	1	Could not load file or assembly
> 'file:///C:\project\lib\Redmine.Net.Api.dll' or one of its
> dependencies. Operation is not supported. (Exception from HRESULT:
> 0x80131515)	C:\project\SGEN	project
How can I fix this?

Why am I receiving the error:

&gt;*Templates can be used only with field access, property access, single-dimension array index, or single-parameter custom indexer expressions*

at this code:

    @model IEnumerable&lt;ArtSchoolProject.Models.Trainer&gt;

    @{
    ViewBag.Title = &quot;Index&quot;;
    Layout = &quot;~/Views/Shared/_PageLayout.cshtml&quot;;
    }

    &lt;h2&gt;Index&lt;/h2&gt;

    &lt;p&gt;
    @Html.ActionLink(&quot;Create New&quot;, &quot;Create&quot;)
    &lt;/p&gt;
    &lt;ul class=&quot;trainers&quot;&gt;
    

    @foreach (var item in Model) {
    &lt;li&gt;
      &lt;div&gt;
          &lt;div class=&quot;left&quot;&gt;
              &lt;a href=&quot;@Url.Action(&quot;Details&quot;, &quot;Details&quot;, new { id = item.ID })&quot;&gt;
                  &lt;img src=&quot;~/Images/Trainer/@item.Picture&quot; /&gt;
              &lt;/a&gt;
          &lt;/div&gt;
          &lt;div class=&quot;right&quot;&gt;
              @Html.ActionLink(item.Name,&quot;Details&quot;,new {id=item.ID})
              &lt;br /&gt;
              @Html.DisplayFor(modelItem=&gt;@string. item.Description.ToString().Substring(0,100))
          &lt;/div&gt;
      &lt;/div&gt;
      &lt;/li&gt;
      }

      &lt;/ul&gt;


at line:

    @Html.DisplayFor(modelItem=&gt;item.Description.ToString().Substring(0,100))



Update:

Problem solved. I added to my code :

      @{
    string parameterValue = item.Description.ToString().Substring(0, 100); 
              }
              @Html.DisplayFor(modelItem=&gt;parameterValue)

My new code:

    @foreach (var item in Model) {
    &lt;li&gt;
      &lt;div&gt;
          &lt;div class=&quot;left&quot;&gt;
              &lt;a href=&quot;@Url.Action(&quot;Details&quot;, &quot;Details&quot;, new { id = item.ID })&quot;&gt;
                  &lt;img src=&quot;~/Images/Trainer/@item.Picture&quot; /&gt;
              &lt;/a&gt;
          &lt;/div&gt;
          &lt;div class=&quot;right&quot;&gt;
              @Html.ActionLink(item.Name,&quot;Details&quot;,new {id=item.ID})
              &lt;br /&gt;
              @{
    string parameterValue = item.Description.ToString().Substring(0, 100); 
              }
              @Html.DisplayFor(modelItem=&gt;parameterValue)
          &lt;/div&gt;
      &lt;/div&gt;
     &lt;/li&gt;
    }


This is only one possibility. Just for curiosity is there another solution for solving the error?

&quot;Templates can be used only with field access, property access, single-dimension array index, or single-parameter custom indexer expressions&quot; error

I have been developing with WebApi and have moved on to WebApi2 where Microsoft has introduced a new `IHttpActionResult` Interface that seems to recommended to be used over returning a `HttpResponseMessage`. I am confused on the advantages of this new Interface. It seems to mainly just provide a **SLIGHTLY** easier way to create a `HttpResponseMessage`. 

I would make the argument that this is &quot;abstraction for the sake of abstraction&quot;. Am I missing something? What is the real world advantages I get from using this new Interface besides maybe saving a line of code?

**Old way** (WebApi):

    public HttpResponseMessage Delete(int id)
    {
        var status = _Repository.DeleteCustomer(id);
        if (status)
        {
            return new HttpResponseMessage(HttpStatusCode.OK);
        }
        else
        {
            throw new HttpResponseException(HttpStatusCode.NotFound);
        }
    }

**New Way** (WebApi2):

    public IHttpActionResult Delete(int id)
    {
        var status = _Repository.DeleteCustomer(id);
        if (status)
        {
            //return new HttpResponseMessage(HttpStatusCode.OK);
            return Ok();
        }
        else
        {
            //throw new HttpResponseException(HttpStatusCode.NotFound);
            return NotFound();
        }
    }

Why should I use IHttpActionResult instead of HttpResponseMessage?

I have a unit test where I have to mock a non-virtual method that returns a bool type

    public class XmlCupboardAccess
    {
        public bool IsDataEntityInXmlCupboard(string dataId,
                                              out string nameInCupboard,
                                              out string refTypeInCupboard,
                                              string nameTemplate = null)
        {
            return IsDataEntityInXmlCupboard(_theDb, dataId, out nameInCupboard, out refTypeInCupboard, nameTemplate);
        }
    }

So I have a mock object of `XmlCupboardAccess` class and I am trying to setup mock for this method in my test case as shown below

    [TestMethod]
    Public void Test()
    {
        private string temp1;
        private string temp2;
        private Mock&lt;XmlCupboardAccess&gt; _xmlCupboardAccess = new Mock&lt;XmlCupboardAccess&gt;();
        _xmlCupboardAccess.Setup(x =&gt; x.IsDataEntityInXmlCupboard(It.IsAny&lt;string&gt;(), out temp1, out temp2, It.IsAny&lt;string&gt;())).Returns(false); 
        //exception is thrown by this line of code
    }

But this line throws exception 

    Invalid setup on a non-virtual (overridable in VB) member: 
    x =&gt; x.IsDataEntityInXmlCupboard(It.IsAny&lt;String&gt;(), .temp1, .temp2, 
    It.IsAny&lt;String&gt;())

Any suggestion how to get around this exception?

Why am I getting an Exception with the message &quot;Invalid setup on a non-virtual (overridable in VB) member...&quot;?

I&#39;m struggling to find a modern example of some asynchronous C# code that uses RestSharp with `async` and `await`. I know there&#39;s [been a recent update by Haack][1] but I don&#39;t know how to use the new methods.

Also, how can I provide a cancellation token so that the operation can be canceled (say, if a person is sick of waiting and presses the Cancel button in the app&#39;s UI).

  [1]: http://haacked.com/archive/2013/09/18/restsharp-104-2-0-released.aspx/

How to use RestSharp with async/await

Following expression is ok

    short d = (&quot;obj&quot; == &quot;obj&quot; ) ? 1 : 2;

But when you use it like below, syntax error occurs

    short d = (DateTime.Now == DateTime.Now) ? 1 : 2;

Cannot implicitly convert type &#39;int&#39; to &#39;short&#39;. An explicit conversion exists (are you missing a cast?)

Can anyone explain why this is so?

Is there a difference between comparing string-to-string and datetime-to-datetime in a ternary operator, why?

I would be grateful if you could help me.

Ternary operator behaviour inconsistency

I have an ASP.NET MVC5 application that worked yesterday and now I am getting this error when I try to build:

&gt;This project references NuGet package(s) that are missing on this computer.

I have the two options checked that allow nuget to automatically download and install missing packages checked / turned ON. I have also tried deleting all of the files in the packages folder and then have nuget re-download them. Also when I open nuget and look for updates it says there are none that need to be installed. I can&#39;t figure what else to do to move beyond this amazingly annoying issue.

I have also enabled nuget restore by right clicking the project and selecting that option. It then added a nuget folder and three items in that folder and does nothing to resolve the problem. I&#39;ve tried re-building and still get the same error.

This project references NuGet package(s) that are missing on this computer

I have a server that is capable of creating and running an Excel Import task using the Import Wizard. I am trying to automate that process by using a visual Studio 2010 Integration Services package, that I am developing on that server.

The problem happens when trying to design the package.  I have added an excel connection and pointed it at the Excel file on a local disk (the same file I have already successfully imported using the import wizard). When I add an Excel Source to the DataFlow and specify the excel connection, when I go to the Name Of the Excel Sheet Drop down I just see &quot;No tables or views can be loaded&quot; and get the following error.

&quot;Could not retrieve the table information for the connection manager.
Failed to connect to the source using the connection manager ...&quot;

I can&#39;t find this error logged anywhere and i don&#39;t know why it is failing. The directory is shared to Authenticated users and the file is not in use.

Any ideas how to debug this error? I understand there can be issues running this in 64 bit mode, but does that apply to development?

I should add that it is an excel 2007 file .XLSX and the connection is set to Excel 2007.

2019-11-08 The answer by GavB841 below looks promising, if anyone tries it and it works please let me know. (I am no longer working in this area.)

SSIS Excel Connection Manager failed to Connect to the Source

I have the following (working) code in an existing code base, used in include file that is shared between C and C++, compiling on MSVC (2010) and Windows DDK:

    struct X {
        USHORT x;
    } typedef X, *PX;

And:

    enum MY_ENUM {
        enum_item_1,
        enum_item_2 
    } typedef MY_ENUM;

As far as I know, correct definition should look like this:

    typedef struct {
        USHORT x;
    } X, *PX;

Is there any purpose for having the form below? Am I missing something?


What is the meaning of `struct X typedef` vs. `typedef struct X`?

Can we use MSBuild without Visual Studio 2012?

Currently, we have a build server where we are compiling and creating deployment copy of one of our projects, it has Visual Studio Professional Edition installed. We are setting up a new build server now. Do we really need Visual Studio 2012 on the new build server?

If yes, then how? I googled it but I couldn&#39;t find an answer.

Does MSbuild require Visual Studio to be installed on the build server?

I installed SQL Server Management Studio and it worked fine. After that I updated my Visual Studio from 2010 to 2013 Express edition, now it is not working with this error message : 

&gt; Cannot find one or more components. Please re install the application

I re-installed it but still same issue. Any suggestion?

Content Type	Original Author	Original Content on Stackoverflow
Question	svz	View Question on Stackoverflow
Solution 1 - C#	MusicLovingIndianGirl	View Answer on Stackoverflow
Solution 2 - C#	Miguel	View Answer on Stackoverflow
Solution 3 - C#	Reudismam	View Answer on Stackoverflow
Solution 4 - C#	Avinash	View Answer on Stackoverflow
Solution 5 - C#	Matt	View Answer on Stackoverflow

Visual Studio "Could not load file or assembly. Operation is not supported" error in Release mode

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

Solution 4 - C#

Solution 5 - C#

Find all columns of dataframe in Pandas whose type is float, or a particular type?

Spring: @ModelAttribute VS @RequestBody

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