An instance of a form in another

[Dan Aldean]

Hi,

2 web pages, One of them has properties that I need to read in a second
form:

First Form

public class FirstForm : System.Web.UI.Page
{
private void submitButton_Click(......)
{
Server.Transfer("SecondForm.aspx")
}

public string UserName //property
{
get
{
return userName.Text; //textbox
}
}
}


-------------------------------
Second form

public class SecondForm
{
public FirstForm firstForm;

private void Page_Load(...)
{
firstForm = (FirstForm) Context.Handler;
userGreeting.Text = firstForm.UserName;
}
}


The problem is that on the real project it does not work.
public FirstForm firstForm;
issues an error, it doesn't know what FirstForm is.
What do I miss?

Thanks

 

[Guest]

Take a look at the PreviousPage property in your second webform. Once again,
this is an ASP.NET newsgroup issue.
Peter

 

[Duggi]

Hi

I have a suggestion..
Another option would be moving your logic to another class which is not
a form, I mean moving data to a high level layer. (may be business
object)

I think making objects of one form in another form for accessing data
is not preferable...

Thanks
-Cnu.

 

[Dan Aldean]

Thanks,
Let me refraze:
2 WINDOWS pages, one of them has properties that I need to read in a second
form:

First Form

public class FirstForm : System.Web.UI.Page
{
public string UserName //property
{
get
{
return userName.Text; //textbox
}
}
}


-------------------------------
Second form

public class SecondForm
{
public FirstForm firstForm;

}

Now it's not ASP anymore, the question still remains.

 

[Guest]

OK, "two Windows Forms".
You should probably follow Duggi's suggestion. By making static fields /
properties in a separate class or class library (assembly) that both forms
have a reference to, either one can easily write to or read from these
properties independently of whether the other form is "open".
Peter

--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.comhttp://ms...soft.com/newsgroups/settings.xml&sdgloc=en-US
UnBlog:
http://petesbloggerama.blogspot.com

 

[Dan Aldean]

thanks to all for the answers. but still why the forms are not visible to
one another?
i have a sample that works. unfortunately the project that i took over
doesn't.
it might be some settings that prevents that.

 

[Guest]

OK, now your code sample is dealing once again with WebForms (ASP.NET web
pages). We have two different animals here - Windows Forms are for regular
windows executable programs that run on your desktop. WebForms run from an
asp.NET WEB SITE that you bring up in your browser.

I suggest to focus on one modality at a time to avoid further confusion!
Peter

--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.com
UnBlog:
http://petesbloggerama.blogspot.com

 

[Duggi]

Hi

"Windows forms", I think you are trying to access data of a control on
the windows form.
If you place a control on a windows form, the control will become an
private member of the form. so you can not access the property out side
the form. eg: Say If you have a textbox on form2, textbox would be
private to the form2. you can create an instance of form2 in form1 but
can not access the text box. However public data / properties of form2
are accessible to the form1. Have look at the following code snippet...


namespace SAMPLE
{
public partial class Form1 : System.Windows.Form
{
private Form2 frm2 = new Form2(); //create an instance of
Form2

public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{
MessageBox.Show(frm2.data); //data is accecible

// frm2.textbox1. OOOOPS not available
}
}
}

namespace SAMPLE //textbox would be private member that can be found
in Form2.Designer.cs
{
public partial class Form2 : System.Windows.Form
{
public string data; //accesible out side
public Form2()
{
data = "Some data here";
InitializeComponent();
}
}
}

I do not have much experience of the WebForms and its internals :-(

Thanks
-Cnu.

 

[Dan Aldean]

This is the part that is not working. For Form1 Form2 does not exist,
therefore I cannot read th eproperty created by me in the Form1 with GET

private Form2 frm2 = new Form2(); //create an instance of

It must be some settings that prevent the instance