I’ve been going over data contracts for WCF lately and wanted to post a few specifics. One issue I ran into recently was odd, as it included an enumeration that needed to be included in part of a data contract. I had tagged the enumeration with the [DataContract] attribute but I was receiving an odd issue about the service disconnecting. The error message I was getting was something like this:
I had read, or thought via failed comprehension, that I could just tag an enumeration with [DataContract] as below.
1: [DataContract]
2: public enum Priority
3: {
4: Low,
5: Medium,
6: High
7: }
.csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, “Courier New”, courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; }
As it turns out though, the [EnumMember] attribute needs added to the enumeration.
1: [DataContract]
2: public enum Priority
3: {
4: [EnumMember]
5: Low,
6: [EnumMember]
7: Medium,
8: [EnumMember]
9: High
10: }
.csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, “Courier New”, courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; }
After I added that, smooth sailing resumed. So don’t just tag the enumeration, tag the members too. I’m also working on some other notes from my reintroduction to WCF (I’ve done a ton of work with it in the past) so stay tuned for that.
