C# Question

[gwi5727]

what is the code to display text in a label in form B coming from a textbox in form A. See attached diagram

[channaJ]

what is the code to display text in a label in form B coming from a textbox in form A. See attached diagram

Are you calling FormB from FormA..?

Anyway...you have to create a public property in FormA, which returns the Text in the text box. Then you can access this property from FormB.

Does it make sence..? Let me know if not.

[gwi5727]

It doesn't make sense.

[gwi5727]

I'm not calling form A from form B. All I want is to display the input in the textbox in form A in the label in form B.
In other words, whatever is input in the textbox area in form A, I want it to appear in the label in form B. These are two different forms.

[Plater]

Something has to be the parent here.
If FormA doesn't call FormB and FormB doesn't call FormA.
Then who called them? (who created/Show() them?)
It's a tricky situation though.
You will need public methods on both forms probably. Having at least GET{} for the textbox and SET{} for the label.
Whoever the Parent is, will need a function that can be accessed from the form with the textbox, so that when the text in the textbox is changed, it calls that function, sending it the contents of the textbox.text property and the function can then SET the text of the label property using the public method you created on that form.

Using seperate forms is always a pain in the butt.

[gwi5727]

Can u express your answer in code form?

[Plater]

I can give it a try...this won't be the best way to solve this problem, but I am pretty sure it will work.

In the Form that has the LABEL you wish to set, create a public function:

public void myTextBox_KeyPress(object sender, KeyPressEventArgs e)
{
       MyLabel.Text=((TextBox)sender).text;
}
 

In the form that has the TEXTBOX you wish to read from, add a custom keypress even handler to the textbox (will be in the designer code)

this.myTextBox.KeyPress += new System.Windows.Forms.KeyPressEventHandler(FORMA.myTextBox_KeyPress);
 

changing the names of FORMA, myTextBox and myLabel to the names of your objects

Should be all you need...

[nmsreddi]

Hello

If you dont want to go for any your own properties then you can simply solve this by creating a public variable in formB ,then when you are moving from A to form B ,at that time ,how ever you have to create an object of formB using that object you can access the public variable of formB there it self you can assign the value of textbox to that variable in formB

Samplecode
//create a public variable in formB ;

string val;

//formA
{

fromB b=new formB();
b.val=textboxa.text;
b.show();

now you can use the vale of val in formB directly

labelB.text=val;

try it out it work fine

[int08h]

If as I understand, you call the Form with TextBox and Button from the Form with Label, and want to update the Text of label in reference with the TextBox by clicking the Button

A delegate may work with this problem

first define a delegate in namespace:
public delegate void TextUpdate(string str);

than in Form A define a member as TextUpdate:
private TextUpdate update;

modify the cunstructor of Form A as below:
private FormA()
{
InitializeComponent();
}// Hide default constructor

public Form2(TextUpdate arg)
: this()
{
update = arg;
}

finally for Form A, raise the Click event of Button as below:
private void buttonName_Click(object sender, EventArgs e)
{
update(this.textBoxName.Text);
}

In Form B, use delegate to instantiate Form a:
Form2 f = new Form2(
delegate(string str)
{
this.labelName.Text = str;
}
);//use annon method

It works fine here
not good English, sorry~