Databases
StackOverflow2013
Postsdbo
POAccessing and Modifying xaml elements with Reflection in C#
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POAccessing and Modifying xaml elements with Reflection in C#
    primarykey
    data
    text
    <p>I have a model that has a number of attributes that may or may not be null, depending on if the data is available for those specific attributes on a remote server.</p> <p>I'm building a simple windows phone application that gives more easily accessible versions of this information on a mobile phone. I found that in the case that the properties of the model above are not set, the value doesn't show up (shows a blank), but the label still shows up. </p> <p>After considering a number of different alternatives for this (including massive amounts of if statements, ugh), I decided that if I set the name for specific attributes in the xaml to match the properties of the data model that I was looking at, I then in real time have the system analyze the properties of the data model, and elements of my xaml. If a property in my xaml matched the name of the property in my model, and the model was null, I could turn the visibility to collapsed. If the model was not null, make it visible. Thus I could have a clean, dynamic solution that would show only the data that is actually available. </p> <p>Here's the code</p> <pre><code>PropertyInfo[] properties = data.GetType().GetProperties(); foreach (PropertyInfo property in properties) { FieldInfo view = this.GetType().GetField(property.Name); if (view != null) { if (property.GetValue(data, null) == null) { object aView = view.GetValue(this); aView.GetType().GetProperty("Visibility").SetValue(aView, "Collapsed", null); } else { object aView = view.GetValue(this); aView.GetType().GetProperty("Visibility").SetValue(aView, "Visible", null); } } } </code></pre> <p>Unfortunately, I hit a snag. I can't figure out how to access the xaml elements. I've tried to use </p> <pre><code>this.GetType().GetProperties() this.GetType().GetFields() this.GetType().GetMembers() </code></pre> <p>To find the elements that I'm looking for, but they don't show up in any of those. Is there something I'm missing.</p> <p>Is there a better way to do this that is more beautiful?</p> <p>Thanks in advance for your help.</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USJamie Starke
    1. USJamie Starke
    plurals
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POAccessing and Modifying xaml elements with Reflection in C#
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POAccessing and Modifying xaml elements with Reflection in C#
      1. This table or related slice is empty.
      1. VTUpMod
    1. COI think you're going about this the wrong way. You should follow the MVVM pattern and bind the visibility to a property in your model that determines if your data us available.
      singulars
      1. POAccessing and Modifying xaml elements with Reflection in C#
      1. USJeff Mercado
    2. CO@JeffMercado You don't have to follow the MVVM pattern! If this is a simple application a bit of code-behind will not do any harm.
      singulars
      1. POAccessing and Modifying xaml elements with Reflection in C#
      1. USColinE
    3. COIf you have a suggestion for how to do that, I'm all ears! Ideally, the StackPanel that contains all of the elements related to this element would be visible/collapsed
      singulars
      1. POAccessing and Modifying xaml elements with Reflection in C#
      1. USJamie Starke
 

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