Re: Accessing controls on another form.
- From: DaveG <no.spam.dave@xxxxxxxxxxx>
- Date: Sun, 01 May 2005 17:38:47 +0200
Thanks guys for your quick responses.
I think I am crawling along one of these roads to Rome. now I can see how
I am supposed to implement a basic setup I'm sure I can play a little, if
not "I shall be back".
DaveG
On Sun, 01 May 2005 09:54:54 +0200, DaveG wrote:
> Hi
>
> I posted this to the .Net general newsgroup and got a reply from
> "Morten" who has given me an answer but in C# a language I have never
> worked with. VB.Net is still very new to me, I was hoping someone here
> in the VB.net group could help me a little. I have copied the posts to
> here.
>
> Morten has given me a code snippet in C# but where do I use it and what
> is the VB.Net equivalent.
>
> Thanks DaveG
>
> ''''''''' Orig Post ''''''''''''''
>
>>>> Hi
>>>>
>>>> Using VB.net 2003
>>>>
>>>> I know how to access controls on a 2nd form after declaring the form
>>>> in the first.
>>>>
>>>> But how do I access the controls on the original form from the 2nd
>>>> form.
>>>>
>>>> (in frmMain)
>>>> Private Sub Button1_Click(ByVal sender As System.Object, ByVal e
>>>> As System.EventArgs) Handles Button1.Click
>>>> Dim form2 As New Form2
>>>> form2.TextBox1.Text = TextBox1.Text
>>>> form2.Show()
>>>> End Sub
>>>>
>>>> (in Form2)
>>>> Private Sub Button1_Click(ByVal sender As System.Object, ByVal e
>>>> As System.EventArgs) Handles Button1.Click
>>>> Dim form1 As New Form1
>>>> form1.TextBox1.Text = TextBox1.Text
>>>> form1.Update()
>>>> Me.Close()
>>>>
>>>> End Sub
>>>>
>>>>
>>>> Form2 textbox updates ok
>>>> The textbox in form1 does not update and still holds the original
>>>> text before opening Form2
>>>>
>>>> This is just a simple example I cannot get working, once I can get
>>>> this working the I should not have problems with the actual code I
>>>> need to use.
>>>>
>>>> There must be a simple answer to this....???
>>>>
>>>> Thanks in advance for any help given
>>>>
>>>> DaveG
>
>>> Hi Dave,
>>>
>>> You need to pass a reference to your 1st form when declaring the 2nd,
>>> typically
>>>
>>> Form2 f2 = new Form2(this); // Me in VB
>>>
>>> Overload the constructor of the 2nd form to accept a 1st form
>>> parameter. Store the parameter for later use
>>>
>>> On Sat, 30 Apr 2005 13:29:05 +0200, DaveG <no.spam.dave@xxxxxxxxxxx>
>>> wrote:
>>>
>> Thanks Morten
>>
>> Now the problem is I have used the overload in normal funtions and subs
>> but never with the constructors, so now I'm a little lost, I understand
>> the reasons for the overload..... so the New form2(Me) will be excepted
>> bur how to implement it is where I am stuck......
>
>
> Dave, overloading a constructor is done the exact same way, although I'm
> not sure how the VB syntax is. Store the Form1 reference for later use.
>
> private Form1 myParent;
>
> public Form2(Form1 f)
> {
> myParent = f;
> }
>
> then simply call
>
> myParent.MethodOrSimilarInForm1()
>
> whenever you need.
.
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