Databases
StackOverflow2013
Postsdbo
POC# .net 3.5+ Dictionary<string, string> key/value pair displaying value as default choice – MVC select list
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POC# .net 3.5+ Dictionary<string, string> key/value pair displaying value as default choice – MVC select list
    primarykey
    data
    text
    <p>I’m trying to figure out any way to retrieve certain elements of a particular class instance for use within a drop-down list that I’m attempting to perform some maintenance on. The goal is to select and assign all Contacts to a key/value pair string array (Contacts being a related entity of Company, specifically, a 1:n relationship - 1 company has multiple contacts) then selecting the first contact’s first and last name attributes out of the sequence where the Boolean class attribute, Primary, is set to True. </p> <pre><code>public class Company { public string Name { get; set; } public virtual ICollection&lt;Contact&gt; Contacts { get; set; } } public class Contact { public string FirstName { get; set; } public string LastName { get; set; } public bool IsPrimary { get; set; } } </code></pre> <p>The following code: </p> <pre><code>private Company CreateViewModel(Company company) { var contacts = _contactService.CompanyContacts(company); } public Dictionary&lt;string, string&gt; CompanyContacts(Company company) { var results = new Dictionary&lt;string, string&gt;(); foreach (var contact in company.Contacts) { var key = string.Format("{0} {1}|{2}", contact.FirstName, contact.LastName, contact.IsPrimary()); var val = string.Format("{0} {1}|{2}", contact.FirstName, contact.LastName, contact.IsPrimary()); if (results.ContainsKey(key)) continue; results.Add(key, val); } return results; } public void InitContactList(Dictionary&lt;string, string&gt; contacts) { var firstOrDefault = contacts .Where(x =&gt; x.Key.Contains("true")) .Select(x =&gt; x.Value) .FirstOrDefault(); var selectedContact = contacts.FirstOrDefault().Value; if (firstOrDefault != null) { var selectedContact = firstOrDefault; ContactList = new SelectList(contacts, "Key", "Value") .SelectByText(selectedContact.ToString()).ToList(); } ContactList = new SelectList(contacts, "Key", "Value") .SelectByText(selectedContact.ToString()).ToList(); } </code></pre> <p>doesn't display the first 'is primary' contact by default in the select-list though. I would like the first isPrimary=1 contact to be the first selection in the picklist. I’m pretty sure the firstOrDefault variable in the InitContactList needs to have the key do something other than .contains(“true”) Any help would be appreciated. Thank you in advance.</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. UScetmrw791346
    1. UScetmrw791346
    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. POC# .net 3.5+ Dictionary<string, string> key/value pair displaying value as default choice – MVC select list
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POC# .net 3.5+ Dictionary<string, string> key/value pair displaying value as default choice – MVC select list
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POC# .net 3.5+ Dictionary<string, string> key/value pair displaying value as default choice – MVC select list
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

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