    Mapper.CreateMap&lt;Source, Destination&gt;()
        .ForMember(dest =&gt; dest.Member, opt =&gt; opt.UseValue&lt;string&gt;(&quot;THIS STRING&quot;));

Starting with [version 8.0][1] you have to use the following:

    Mapper.CreateMap&lt;Source, Destination&gt;()
        .ForMember(dest =&gt; dest.Member, opt =&gt; opt.MapFrom(src =&gt; &quot;THIS STRING&quot;));


  [1]: https://docs.automapper.org/en/stable/8.0-Upgrade-Guide.html?highlight=value#usevalue

I need to take an array like I have below:

    $subids = Array
        (
            [s1] =&gt; one
            [s2] =&gt; two
            [s3] =&gt; three
            [s4] =&gt; four
            [s5] =&gt; five
            [s6] =&gt; six
        )

and generate a URL such as http://example.com?s1=one&amp;s2=two&amp;s3=three=&amp;s4=four&amp;s5=five&amp;s6=six

All of the subids are not always defined, so sometimes s3 may not be defined, so it shouldn&#39;t be appended to the URL. Additionally, whatever the first subid is, it has to have the ? preceding it instead of the ampersand (&amp;)

So if the array is just:

    $subids = Array
        (
            [s2] =&gt; two
            [s6] =&gt; six
        )

then the URL needs to be http://example.com?s2=two&amp;s6=six

I have the following so far:

$url = &#39;http://example.com&#39;

        foreach ($subids AS $key =&gt; $value) {
            $result[$id][&#39;url&#39;] .= &#39;&amp;&#39; . $key . &#39;=&#39; . $value;
        }

However, I&#39;m not sure what the best way would be to append the ? at the beginning of the first key/value pair.

I feel like there&#39;s a PHP function to help with this but I&#39;m not finding much. I&#39;m using Codeigniter if there&#39;s anything I can use that is provided by CI.

Generate URL with parameters from an array

I&#39;m having troubles getting my `&lt;input type=&quot;textarea&quot; /&gt;` to have more than 1 row,

I tried adding the properties in the html, like you would do with a normal `&lt;textarea&gt;&lt;/textarea&gt;` like this: `&lt;input type=&quot;textarea&quot; rows=&quot;x&quot; cols=&quot;x&quot; /&gt;`

I even tried to do it in CSS, but it did not work.
I&#39;ve searched all over the internet for a solution, but i can&#39;t seem to find a topic regarding my exact problem anywhere.

The textareas i&#39;m experiencing this with, are on this website:
[Vilduhelst][1]

When you press the &quot;Lav dit eget dilemma&quot; button they will appear.

I&#39;m looking for either a HTML or CSS solution.


  [1]: http://trendlining.com/~vilduhel/

More than 1 row in &lt;Input type=&quot;textarea&quot; /&gt;

I&#39;d like to be able to do something like this using automapper:

    Mapper.CreateMap&lt;Source, Destination&gt;()
        .ForMember&lt;d =&gt; d.Member, &quot;THIS STRING&quot;&gt;();

I&#39;d like d.Member to always be &quot;THIS STRING&quot; and not be mapped from any particular member from the source model. Putting a string field in the source model with &quot;THIS STRING&quot; as it&#39;s value is also not an option. 

Does AutoMapper support these kinds of things in any way?

How to Map String Literal to Destination Property

I'd like to be able to do something like this using automapper:
<pre><code class="hljs language-ini">Mapper.CreateMap&#x3C;Source, Destination>()
 .ForMember&#x3C;d => d.Member, "THIS STRING">();
</code></pre>
I'd like d.Member to always be "THIS STRING" and not be mapped from any particular member from the source model. Putting a string field in the source model with "THIS STRING" as it's value is also not an option.
Does AutoMapper support these kinds of things in any way?

I have the case where I want to map an entity to a viewmodel and back. I have to specify the mapping explicitly with `ForMember()` because their properties do not share the exact same names. Here is a short example of how my classes look like:

    public class PartTwo {
        public int Integer { get; set; }
    }

    public class PartTwoViewModel {
        public int PartInteger { get; set; }
    }

And I want to use them this way:

    Mapper.CreateMap&lt;PartTwo, PartTwoViewModel&gt;()
        .ForMember(dst =&gt; dst.PartInteger, opt =&gt; opt.MapFrom(src =&gt; src.Integer))
        .ReverseMap();

    var partTwoViewModel = new PartTwoViewModel() { PartInteger = 42 };
    var partTwo = Mapper.Map&lt;PartTwoViewModel, PartTwo&gt;(partTwoViewModel);
    Assert.AreEqual(partTwoViewModel.PartInteger, partTwo.Integer);

But it does not match the property `PartInteger` to `Integer`. (`Integer` is `0`.)

Is there a way to make this work? (When the properties of both classes have the same names it works.) Do I have to set some kind of option in the method `ForMember()`?


Automapper: bidirectional mapping with ReverseMap() and ForMember()

Entity Model

    public partial class Categoies
    {
        public Categoies()
        {
            this.Posts = new HashSet&lt;Posts&gt;();
        }
    
        public int Id { get; set; }
        public string Name { get; set; }
        public string Description { get; set; }
        public Nullable&lt;int&gt; PositionId { get; set; }
    
        public virtual CategoryPositions CategoryPositions { get; set; }
        public virtual ICollection&lt;Posts&gt; Posts { get; set; }
    }

View Model

    public class CategoriesViewModel
    {
        public int Id { get; set; }

        [Required(ErrorMessage = &quot;{0} alanı boş bırakılmamalıdır!&quot;)]
        [Display(Name = &quot;Kategori Adı&quot;)]
        public string Name { get; set; }

        [Display(Name = &quot;Kategori A&#231;ıklama&quot;)]
        public string Description { get; set; }

        [Display(Name = &quot;Kategori Pozisyon&quot;)]
        [Required(ErrorMessage=&quot;{0} alanı boş bırakılmamalıdır!&quot;)]
        public int PositionId { get; set; }
    }

CreateMap

    Mapper.CreateMap&lt;CategoriesViewModel, Categoies&gt;()
                .ForMember(c =&gt; c.CategoryPositions, option =&gt; option.Ignore())
                .ForMember(c =&gt; c.Posts, option =&gt; option.Ignore());

Map

    [HttpPost]
    public ActionResult _EditCategory(CategoriesViewModel viewModel)
    {
        using (NewsCMSEntities entity = new NewsCMSEntities())
        {
            if (ModelState.IsValid)
            {
                try
                {
                    category = entity.Categoies.Find(viewModel.Id);
                    AutoMapper.Mapper.Map&lt;CategoriesViewModel, Categoies&gt;(viewModel, category);
                    //category = AutoMapper.Mapper.Map&lt;CategoriesViewModel, Categoies&gt;(viewModel);
                    //AutoMapper.Mapper.Map(viewModel, category);
                    entity.SaveChanges();

                    // Veritabanı işlemleri başarılı ise y&#246;nlendirilecek sayfayı 
                    // belirleyip ajax-post-success fonksiyonuna g&#246;nder.
                    return Json(new { url = Url.Action(&quot;Index&quot;) });
                }
                catch (Exception ex)
                {

                }
            }

            // Veritabanı işlemleri başarısız ise modeli tekrar g&#246;nder.
            ViewBag.Positions = new SelectList(entity.CategoryPositions.ToList(), &quot;Id&quot;, &quot;Name&quot;);
            return PartialView(viewModel);
        }
    }

Error

&gt; Missing type map configuration or unsupported mapping.
&gt; Mapping types:
&gt; CategoriesViewModel -&gt; Categoies_7314E98C41152985A4218174DDDF658046BC82AB0ED9E1F0440514D79052F84D
&gt; NewsCMS.Areas.Admin.Models.CategoriesViewModel -&gt; System.Data.Entity.DynamicProxies.Categoies_7314E98C41152985A4218174DDDF658046BC82AB0ED9E1F0440514D79052F84D
&gt;
&gt; Destination path:
&gt; Categoies_7314E98C41152985A4218174DDDF658046BC82AB0ED9E1F0440514D79052F84D
&gt;
&gt; Source value:
&gt; NewsCMS.Areas.Admin.Models.CategoriesViewModel

What am I missing? I try to find, but I cant see problem.

**UPDATE**

I have specified in application_start in Global.asax

    protected void Application_Start()
    {
        InitializeAutoMapper.Initialize();
    }

InitializeClass

    public static class InitializeAutoMapper
    {
        public static void Initialize()
        {
            CreateModelsToViewModels();
            CreateViewModelsToModels();
        }

        private static void CreateModelsToViewModels()
        {
            Mapper.CreateMap&lt;Categoies, CategoriesViewModel&gt;();
        }

        private static void CreateViewModelsToModels()
        {
            Mapper.CreateMap&lt;CategoriesViewModel, Categoies&gt;()
                .ForMember(c =&gt; c.CategoryPositions, option =&gt; option.Ignore())
                .ForMember(c =&gt; c.Posts, option =&gt; option.Ignore());
        }
    }


Automapper missing type map configuration or unsupported mapping - Error

I am a newbie to the Automapper framework. I have a domain class and a DTO class as follows:

    public class Employee
    {
       public long Id {get;set;}
       public string Name {get;set;}
       public string Phone {get;set;}
       public string Fax {get;set;}
       public DateTime DateOfBirth {get;set;}
    }
    
    public class EmployeeDto
    {
       public long Id {get;set;}
       public string FullName {get;set;}
       public DateTime DateOfBirth {get;set;}
    }

Note: The name of property &quot;**Name**&quot; of `Employee` class is not the same as that of property &quot;**FullName**&quot; of `EmployeeDto` class.

And here&#39;s the code to map the `Employee` object to `EmployeeDto`:

    Mapper.CreateMap&lt;Employee, EmployeeDto&gt;(); // code line (***)
    EmployeeDto dto = Mapper.Map&lt;Employee, EmployeeDto&gt;(employee); 

My question is: If I want to map `Employee` (source class) to `EmployeeDto` (destination class), how can I specify the mapping rule? In other words, how should I do more with code line (\***) above?

How to specify mapping rule when names of properties differ

Ignoring the `ResolveUsing` overloads that take an IValueResolver, and looking only at these 2 methods:

&lt;!-- language-all: c# --&gt;

    void ResolveUsing(Func&lt;TSource, object&gt; resolver);
    void MapFrom&lt;TMember&gt;(Expression&lt;Func&lt;TSource, TMember&gt;&gt; sourceMember);


The main difference between these 2 seems to be that `ResolveUsing` takes a `Func&lt;TSource, object&gt;`, whereas MapFrom takes an `Expression&lt;Func&lt;TSource, TMember&gt;&gt;`.

However in client code that actually uses one of these methods with a lambda expression, they seem to be interchangeable:

    Mapper.CreateMap&lt;SourceType, DestType&gt;() // uses ResolveUsing
       .ForMember(d =&gt; d.DestPropX, o =&gt; o.ResolveUsing(s =&gt; s.SourcePropY));
    
    Mapper.CreateMap&lt;SourceType, DestType&gt;() // uses MapFrom
       .ForMember(d =&gt; d.DestPropX, o =&gt; o.MapFrom(s =&gt; s.SourcePropY));

So what ultimately is the difference between the above 2 choices? Is one faster than the other? Is one a better choice than the other and if so, when / why?

AutoMapper: What is the difference between MapFrom and ResolveUsing?

Suppose I have the following entities (classes)

    public class Target
    {
        public string Value;
    }


    public class Source
    {
        public string Value1;
        public string Value2;
    }


Now I want to configure Auto Map, to Map Value1 to Value if Value1 starts with &quot;A&quot;, but otherwise I want to map Value2 to Value.

This is what I have so far:

    Mapper
        .CreateMap&lt;Source,Target&gt;()
        .ForMember(t =&gt; t.Value, 
            o =&gt; 
                {
                    o.Condition(s =&gt; 
                        s.Value1.StartsWith(&quot;A&quot;));
                    o.MapFrom(s =&gt; s.Value1);
                      &lt;&lt;***But then how do I supply the negative clause!?***&gt;&gt;
                })


However the part the still eludes me is how to tell AutoMapper to *go take `s.Value2`* should the earlier condition fails. 

It just seems to me the API was not designed as well as it could be... but may be it&#39;s my lack of knowledge getting in the way.

Content Type	Original Author	Original Content on Stackoverflow
Question	Rick Eyre	View Question on Stackoverflow
Solution 1 - Automapper	mfanto	View Answer on Stackoverflow

How to Map String Literal to Destination Property

Automapper Problem Overview

Automapper Solutions

Solution 1 - Automapper

More than 1 row in <Input type="textarea" />

Generate URL with parameters from an array

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