Databases
StackOverflow2013
Postsdbo
POWhy do I only recive one Object in this foreach-statement?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POWhy do I only recive one Object in this foreach-statement?
    primarykey
    data
    text
    <p>I get kind of mad with this piece of code:</p> <pre><code>Entity.GuidArrayArray.gaa[0]) is a static Guid[][] Entity.Customer is an non static ClassObject with several propperties e.G .id which is a Guid Entity.DataSource.LbCustomer.CustomerSource is a static BindingList&lt;Entity.Customer&gt; Entity.CustomerCollection.customerCollection is a static List&lt;Entity.Customer&gt; </code></pre> <p>gaa[0] contains 6 different Guids which are equal to the .id of the same ammount of Customer in customerCollection. Before this Code starts CustomerSource contains Clones of customerCollection.</p> <p>The outcome i wish to get (in this special case) is (same as before) a Clone of Each Object in customerCollection added into CustomerSource. What I get instead is only the last Object in the list. I guess it has something to do with the foreach-statement, that each guid in gaa[0] selects its connected Object and overwrites the previos, but i see no way to prevent this. I hope you have any idea?</p> <pre><code> public static void GuidInput() { CustomerFiller(Entity.GuidArrayArray.gaa[0]); } private static void CustomerFiller(Guid[] guidArray) { foreach (Guid g in guidArray) Entity.DataSource.LbCustomer.CustomerSource = ToBindingList(Entity.CustomerCollection.customerCollection.Where(a =&gt; a.id == g).ToList()); } private static BindingList&lt;T&gt; ToBindingList&lt;T&gt;(List&lt;T&gt; input) { BindingList&lt;T&gt; output = new BindingList&lt;T&gt;(Clone(input)); return output; } private static List&lt;T&gt; Clone&lt;T&gt;(IEnumerable&lt;T&gt; input) { List&lt;T&gt; clonedList = new List&lt;T&gt;(input); return clonedList; } </code></pre> <p>EDIT:</p> <hr> <p>Solution:</p> <pre><code>private static void CustomerFiller(Guid[] guidArray) { foreach (Guid g in guidArray) { List&lt;Entity.Customer&gt; abc =new List&lt;Entity.Customer&gt;(); foreach (Guid g in guidArray) abc.AddRange(Entity.CustomerCollection.customerCollection.Where(a =&gt; a.id == g)); Entity.DataSource.LbCustomer.CustomerSource = ToBindingList(abc); Entity.DataSource.LbCustomer.CustomerSource = Reduce(Entity.DataSource.LbCustomer.CustomerSource, x =&gt; x.id); } </code></pre> <p>But I still hope to get rid of the foreach.</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USRaymond Osterbrink
    1. USRaymond Osterbrink
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POWhy do I only recive one Object in this foreach-statement?
      1. This table or related slice is empty.
      1. VTDownMod
    2. VO
      singulars
      1. POWhy do I only recive one Object in this foreach-statement?
      1. This table or related slice is empty.
      1. VTDownMod
    3. VO
      singulars
      1. POWhy do I only recive one Object in this foreach-statement?
      1. This table or related slice is empty.
      1. VTUpMod
    1. COIs it not because you're setting `CustomerSource` equal to the list of customer collection items each iteration, thus will be equal to the binding list of `customerCollection` items for the last guid in `guidArray` when the loop finished?
      singulars
      1. POWhy do I only recive one Object in this foreach-statement?
      1. USJoshua Brodie
    2. CO@JoshuaBrodie Thanks, you were correct. I edited my entry to show the solution. Still I might like to get rid of the foreach.
      singulars
      1. POWhy do I only recive one Object in this foreach-statement?
      1. USRaymond Osterbrink
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload