CODEWITHSUNDEEP
.netwinformsdesignerpropertygriddesign-time
Hamid
Hamid

Reputation: 1099

Problem with set related property in designer at first time

I Develop a Form Designer, also develop some custom control that inherit from standard control like button.

Also, i have some property that related, for example user must select department first, and then select person. and after user select person, I set Text of my custom control (that inherit from button in this case).
Note: user can change Text property.

All thing work properly, but when i load from DB or drag and drop control to form designer, Text of controlName# set,

After override Text property and debug it, i see text set right, but after set my text, designer set text with controlName# that this wrong.

How to solve this proplem ?

Thanks in advance
Hamid

Upvotes: 0

Views: 147

Answers (2)

Pondidum
Pondidum

Reputation: 11637

There are attributes you can apply to your properties such as ReadOnly that will stop the designer from setting your property too.

I cant find the link at the moment, but there is also a method of telling the forms designer that it should set properties in a certain order.

Edit:

Ok, not quite what i remembered it as, but i think something like the ISupportInitialize interface.

Something like:

Public Class Test
    Implements ISupportInitalise

    private _numberOne as integer
    private _numberTwo as integer
    private _initalised as boolean

    Public Property NumberOne() as Integer
        Get
            return _numberOne
        End Get
        Set(value as Integer)

            if _initalised then
                'perform checks here'
            end if

            _numberOne = value 
        End Set
    End Property

    Public Property NumberTwo() as Integer
        Get
            return _numberTwo
        End Get
        Set(value as IntegeR)
            if _initalised then
                'perform checks here'
            end if

            _numberTwo = value 
        End Set
    End Property

    Public Sub BeginInit Implements ISupportInitalise.BeginInit
        _initalised = false
    End Sub

    Public Sub EndInit Implements ISupportInitalise.EndInit
        _initalised = true

        'perform all checks here'
    End Sub

End Class

This way all your checking can be disabled until your object is fully initialised.

Upvotes: 1

SLaks
SLaks

Reputation: 887797

You could check in your overriden Text setter whether it's being set to controlName# and, if it is, do nothing.

Upvotes: 0

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