List of user defined class gives more properties or fields then defined.

Question

5.00/5 (1 vote)

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Hi all,

i declared a public class "CLS_A" which has one property "prp_A" as below :-

VB

Public Class CLS_A

Private _prp_A As Integer

Public Sub New(prp_A As Integer)
       Me._prp_A= prp_A
End Sub

i am creating list of this user defined class and give that to data grid as data source.

i am getting one more column in grid "_prp_ASpecified" with boolean datatype.

why this extra column is showing and how can i remove this one.???

Thanks in Advance.

Posted 6-Apr-14 22:04pm

jayeshkumar.rathod

Updated 6-Apr-14 22:18pm

v3

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3 solutions

Solution 1

I think this line

Quote:
Me._prp_A = prp_A

should be

Quote:
Me._Age = prp_A

?

If that is the case, make sure you have specified Option Explicit On to help the compiler help you with this type of issue.

Going by what you have posted, your class does not have any public properties for the grid to display at all - if you want to display _prp_A in the grid you should expose it through a public property.

Posted 6-Apr-14 22:10pm

Duncan Edwards Jones

Updated 6-Apr-14 22:33pm

v2

Comments

jayeshkumar.rathod 7-Apr-14 4:17am

hi,
Thanks for replied but actually there was some typo mistake can you see again the same?. i just updated the question.

Solution 2

Clearly, that isn't your whole class: it wouldn't compile like that, as _prp_A is not declared, and you need a space in the method parameter declaration.

So, either this is a spurious version of your class, or you have cut out too much code when you posted it here...

Start in VS: go to where you load the datagrid, and check the class type it it being loaded with, then use the VS "Go to definition" to make sure you are looking at the right code.
Then use the Class View pane to examine its properties and methods - I think you have declared a property in the real code that you have missed here.

Posted 6-Apr-14 22:17pm

OriginalGriff

Comments

jayeshkumar.rathod 7-Apr-14 4:20am

hi OrigianalGriff ,
i believe you are right.
and one more thing can u see the same again please?

OriginalGriff 7-Apr-14 4:30am

What does the class view pane show?

jayeshkumar.rathod 7-Apr-14 4:38am

i provided the list of this class to data grid as data source i got two columns
1 is "_prp_A" with value and 2nd is "_prp_ASpecified" with check box in grid.
why "_prp_ASpecified" this is coming?

OriginalGriff 7-Apr-14 5:02am

No, what does the Class View pane in Visual Studio say? It's the "real arbiter" - and if it says the property exists, right click it and select "goto definition" which will take you to the code that creates it.

CHill60 7-Apr-14 18:57pm

Don't know why you were downvoted... countered

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jayeshkumar.rathod · Accepted Answer · 2014-04-06T23:20:00

Solution 3

hi all this above problem comes because of wcf service data member propertt.

i am creating list on wcf service and consume it from winform.

Posted 6-Apr-14 23:20pm

jayeshkumar.rathod

Updated 6-Apr-14 23:22pm

v3