How can I convert string to Guid?

Question

I have string type value like "e2ddfa02610e48e983824b23ac955632". I need to add - in this code means convert in Guid.

EntityKey = "e2ddfa02610e48e983824b23ac955632";
Id = (Guid)paymentRecord.EntityKey;

Which one is it? C# or C++(CLI)? – spender Nov 27 '15 at 09:32 — spender, Nov 27 '15 at 09:32

score 13 · Accepted Answer · answered Nov 27 '15 at 09:20

13

Just a simple creation:

  String source = "e2ddfa02610e48e983824b23ac955632";

  Guid result = new Guid(source);

answered Nov 27 '15 at 09:20

Dmitry Bychenko

Id = new Guid(paymentRecord.EntityKey), with this a error is coming "cannot convert object to byte[]" – Kapil Garg Nov 27 '15 at 09:25
@Kapil Garg: what is the type of `paymentRecord.EntityKey`? i.e. `paymentRecord.EntityKey.GetType().Name`? – Dmitry Bychenko Nov 27 '15 at 09:28

Morgan M. · Answer 2 · 2015-11-27T13:24:57.367

9

You could do :

Guid guid;
if (Guid.TryParse("e2ddfa02610e48e983824b23ac955632", out guid))
{
    // succeed...
}
else
{
    // failed...
}

Edit : Like @Silvermind said, if you know the format of the input, you can use Guid.TryParseExact with the "N" format in your case.

edited Nov 27 '15 at 13:24

answered Nov 27 '15 at 09:22

Morgan M.

1

Since you know the format `"N"`, I would suggest adding it. – Silvermind Nov 27 '15 at 09:49

Arion · Answer 3 · 2015-11-27T09:48:43.693

For parsing the string to a Guid. You can do this:

var guid= "e2ddfa02610e48e983824b23ac955632";
var result= Guid.ParseExact(guid,"N")

Or if you prefer to have it in a try parse. You can also do this:

Guid result;
if(Guid.TryParseExact(guid,"N",out result))
{
    //Do something
}

The "N" is a format which indicates that the string will be format with 32 digits without "-"

Reference:

3 Answers3