StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

POGetting the attributes of a field using reflection in C#
primarykey
Id
1417670
data
AcceptedAnswerId
1417677
AnswerCount
1
ClosedDate
CommentCount
3
CommunityOwnedDate
CreationDate
2009-09-13T12:44:39.857
FavoriteCount
0
LastActivityDate
2009-09-13T12:57:38.013
LastEditDate
2009-09-13T12:51:24.910
LastEditorUserId
149692
OwnerUserId
149692
ParentId
0
PostTypeId
1
Score
3
ViewCount
12385
LastEditorDisplayName
text
Body
I wrote a method that extracts fields from an object like this: <pre><code>private static string GetHTMLStatic(ref Object objectX, ref List<string> ExludeFields) { Type objectType = objectX.GetType(); FieldInfo[] fieldInfo = objectType.GetFields(); foreach (FieldInfo field in fieldInfo) { if(!ExludeFields.Contains(field.Name)) { DisplayOutput += GetHTMLAttributes(field); } } return DisplayOutput; } </code></pre> Each field in my class also has it's own attributes, in this case my attribute is called HTMLAttributes. Inside the foreach loop I'm trying to get the attributes for each field and their respective values. It currently looks like this: <pre><code>private static string GetHTMLAttributes(FieldInfo field) { string AttributeOutput = string.Empty; HTMLAttributes[] htmlAttributes = field.GetCustomAttributes(typeof(HTMLAttributes), false); foreach (HTMLAttributes fa in htmlAttributes) { //Do stuff with the field's attributes here. } return AttributeOutput; } </code></pre> My attributes class looks like this: <pre><code>[AttributeUsage(AttributeTargets.Field, AllowMultiple = true)] public class HTMLAttributes : System.Attribute { public string fieldType; public string inputType; public HTMLAttributes(string fType, string iType) { fieldType = fType.ToString(); inputType = iType.ToString(); } } </code></pre> This seems logical but it won't compile, I have a red squiggly line in the GetHTMLAttributes() method under: <pre><code>field.GetCustomAttributes(typeof(HTMLAttributes), false); </code></pre> The field I'm trying to extract the attributes from is in another class used like this: <pre><code>[HTMLAttributes("input", "text")] public string CustomerName; </code></pre> From my understanding (or lack thereof) this should work? Please expand my mind fellow developers! *Edit, compiler error: <blockquote> Cannot implicitly convert type 'object[]' to 'data.HTMLAttributes[]'. An explicit conversion exists (are you missing a cast?) </blockquote> I have tried casting it like this: <pre><code>(HTMLAttributes)field.GetCustomAttributes(typeof(HTMLAttributes), false); </code></pre> But that also doesn't work, I get this compiler error: <blockquote> Cannot convert type 'object[]' to 'data.HTMLAttributes' </blockquote>
Tags
<c#><reflection><attributes><fieldinfo>
Title
Getting the attributes of a field using reflection in C#
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USMr. Smith
UserOwnerUserId
1. USMr. Smith
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
2. PL
 singulars
 LinkTypeLinkTypeId
 LTDuplicate
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. This table or related slice is empty.
CommentsPostId

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.