How to update a label

Hi, my question is how to update tha value in a labe (label1)l when i click
in a button ( button1 or button2 ), like this code:
public partial class Form1 : Form

{

private static string variable;

public Form1()

{

InitializeComponent();

}

private void Form1_Load(object sender, EventArgs e)

{

label1.Text = variable;

}

private void button1_Click(object sender, EventArgs e)

{

variable = "a";

}

private void button2_Click(object sender, EventArgs e)

{

variable = "b";

}

private void button3_Click(object sender, EventArgs e)

{

MessageBox.Show(variable);

}

}



thanks a lot!

Pablo

You have to tell it to update it - you can't just set the variable.
Something like this maybe?

private void button1_Click(object sender, EventArgs e)
{
variable = "a";
UpdateLabel();
}

private void button2_Click(object sender, EventArgs e)
{
variable = "b";
UpdateLabel()
}

private void UpdateLabel()
{
label1.Text = variable;
}

"Pablo Czyscas" <turton_1@hotmail.com> wrote in message
news:%23Ar7dUvnIHA.5472@TK2MSFTNGP03.phx.gbl...
> Hi, my question is how to update tha value in a labe (label1)l when i
> click in a button ( button1 or button2 ), like this code:
> public partial class Form1 : Form
>
> {
>
> private static string variable;
>
> public Form1()
>
> {
>
> InitializeComponent();
>
> }
>
> private void Form1_Load(object sender, EventArgs e)
>
> {
>
> label1.Text = variable;
>
> }
>
> private void button1_Click(object sender, EventArgs e)
>
> {
>
> variable = "a";
>
> }
>
> private void button2_Click(object sender, EventArgs e)
>
> {
>
> variable = "b";
>
> }
>
> private void button3_Click(object sender, EventArgs e)
>
> {
>
> MessageBox.Show(variable);
>
> }
>
> }
>
>
>
> thanks a lot!
>
> Pablo
>
>

Thanks Chris, but what about if the label1 is in another form ? Let me give
you and example: i have 2 forms, form1 and form2...form1 show form2 and when
i click the button1 that is in form2, i´d like to update the label1 that is
in form1 ?

Thanks a lot in advance, and sorry for my small knowledge...



"Chris Tacke, eMVP" <ctacke.at.opennetcf.dot.com> escribió en el mensaje
news:eoIy7WvnIHA.4744@TK2MSFTNGP06.phx.gbl...
> You have to tell it to update it - you can't just set the variable.
> Something like this maybe?
>
> private void button1_Click(object sender, EventArgs e)
> {
> variable = "a";
> UpdateLabel();
> }
>
> private void button2_Click(object sender, EventArgs e)
> {
> variable = "b";
> UpdateLabel()
> }
>
> private void UpdateLabel()
> {
> label1.Text = variable;
> }
>
> "Pablo Czyscas" <turton_1@hotmail.com> wrote in message
> news:%23Ar7dUvnIHA.5472@TK2MSFTNGP03.phx.gbl...
>> Hi, my question is how to update tha value in a labe (label1)l when i
>> click in a button ( button1 or button2 ), like this code:
>> public partial class Form1 : Form
>>
>> {
>>
>> private static string variable;
>>
>> public Form1()
>>
>> {
>>
>> InitializeComponent();
>>
>> }
>>
>> private void Form1_Load(object sender, EventArgs e)
>>
>> {
>>
>> label1.Text = variable;
>>
>> }
>>
>> private void button1_Click(object sender, EventArgs e)
>>
>> {
>>
>> variable = "a";
>>
>> }
>>
>> private void button2_Click(object sender, EventArgs e)
>>
>> {
>>
>> variable = "b";
>>
>> }
>>
>> private void button3_Click(object sender, EventArgs e)
>>
>> {
>>
>> MessageBox.Show(variable);
>>
>> }
>>
>> }
>>
>>
>>
>> thanks a lot!
>>
>> Pablo
>>
>>
>
>

This is a basic OOP concept. You need to call to the label through the
FOrm1 instance. I recommend you go pick up an intro C# book - preferrably
one that covers WinForms - and walk through it as it will cover this.


--

Chris Tacke, Embedded MVP
OpenNETCF Consulting
Giving back to the embedded community
http://community.OpenNETCF.com


"Pablo Czyscas" <turton_1@hotmail.com> wrote in message
news:%23it7oAwnIHA.4708@TK2MSFTNGP02.phx.gbl...
> Thanks Chris, but what about if the label1 is in another form ? Let me
> give you and example: i have 2 forms, form1 and form2...form1 show form2
> and when i click the button1 that is in form2, i´d like to update the
> label1 that is in form1 ?
>
> Thanks a lot in advance, and sorry for my small knowledge...
>
>
>
> "Chris Tacke, eMVP" <ctacke.at.opennetcf.dot.com> escribió en el mensaje
> news:eoIy7WvnIHA.4744@TK2MSFTNGP06.phx.gbl...
>> You have to tell it to update it - you can't just set the variable.
>> Something like this maybe?
>>
>> private void button1_Click(object sender, EventArgs e)
>> {
>> variable = "a";
>> UpdateLabel();
>> }
>>
>> private void button2_Click(object sender, EventArgs e)
>> {
>> variable = "b";
>> UpdateLabel()
>> }
>>
>> private void UpdateLabel()
>> {
>> label1.Text = variable;
>> }
>>
>> "Pablo Czyscas" <turton_1@hotmail.com> wrote in message
>> news:%23Ar7dUvnIHA.5472@TK2MSFTNGP03.phx.gbl...
>>> Hi, my question is how to update tha value in a labe (label1)l when i
>>> click in a button ( button1 or button2 ), like this code:
>>> public partial class Form1 : Form
>>>
>>> {
>>>
>>> private static string variable;
>>>
>>> public Form1()
>>>
>>> {
>>>
>>> InitializeComponent();
>>>
>>> }
>>>
>>> private void Form1_Load(object sender, EventArgs e)
>>>
>>> {
>>>
>>> label1.Text = variable;
>>>
>>> }
>>>
>>> private void button1_Click(object sender, EventArgs e)
>>>
>>> {
>>>
>>> variable = "a";
>>>
>>> }
>>>
>>> private void button2_Click(object sender, EventArgs e)
>>>
>>> {
>>>
>>> variable = "b";
>>>
>>> }
>>>
>>> private void button3_Click(object sender, EventArgs e)
>>>
>>> {
>>>
>>> MessageBox.Show(variable);
>>>
>>> }
>>>
>>> }
>>>
>>>
>>>
>>> thanks a lot!
>>>
>>> Pablo
>>>
>>>
>>
>>
>
>

Hi,
You can update label using "global settings" in your solution.

like this:
public class cAppSettings {
//Declare your variables
public static string variable {get; set;}
}


in form1 (where you have de label) you can put a event handler

this.Activated += new EventHandler(form1_Activated);

void form1_Activated(object sender, EventArgs e)
{
UpdateLabel();
}

private void UpdateLabel()
{
label1.Text = cAppSettings.variable;
}


in form2 when you click button2

private void button2_Click(object sender, EventArgs e)
{
cAppSettings.variable = "b";
}


when you close form2 the form1 run void rm1_Activated and Update your label.

Hi hope this help.
--
Armando Rocha
Mobile Developer

http://www.ifthensoftware.com
"Chris Tacke, eMVP" <ctacke.at.opennetcf.dot.com> escreveu na mensagem
news:e8%23xHVwnIHA.4036@TK2MSFTNGP05.phx.gbl...
> This is a basic OOP concept. You need to call to the label through the
> FOrm1 instance. I recommend you go pick up an intro C# book - preferrably
> one that covers WinForms - and walk through it as it will cover this.
>
>
> --
>
> Chris Tacke, Embedded MVP
> OpenNETCF Consulting
> Giving back to the embedded community
> http://community.OpenNETCF.com
>
>
> "Pablo Czyscas" <turton_1@hotmail.com> wrote in message
> news:%23it7oAwnIHA.4708@TK2MSFTNGP02.phx.gbl...
>> Thanks Chris, but what about if the label1 is in another form ? Let me
>> give you and example: i have 2 forms, form1 and form2...form1 show form2
>> and when i click the button1 that is in form2, i´d like to update the
>> label1 that is in form1 ?
>>
>> Thanks a lot in advance, and sorry for my small knowledge...
>>
>>
>>
>> "Chris Tacke, eMVP" <ctacke.at.opennetcf.dot.com> escribió en el mensaje
>> news:eoIy7WvnIHA.4744@TK2MSFTNGP06.phx.gbl...
>>> You have to tell it to update it - you can't just set the variable.
>>> Something like this maybe?
>>>
>>> private void button1_Click(object sender, EventArgs e)
>>> {
>>> variable = "a";
>>> UpdateLabel();
>>> }
>>>
>>> private void button2_Click(object sender, EventArgs e)
>>> {
>>> variable = "b";
>>> UpdateLabel()
>>> }
>>>
>>> private void UpdateLabel()
>>> {
>>> label1.Text = variable;
>>> }
>>>
>>> "Pablo Czyscas" <turton_1@hotmail.com> wrote in message
>>> news:%23Ar7dUvnIHA.5472@TK2MSFTNGP03.phx.gbl...
>>>> Hi, my question is how to update tha value in a labe (label1)l when i
>>>> click in a button ( button1 or button2 ), like this code:
>>>> public partial class Form1 : Form
>>>>
>>>> {
>>>>
>>>> private static string variable;
>>>>
>>>> public Form1()
>>>>
>>>> {
>>>>
>>>> InitializeComponent();
>>>>
>>>> }
>>>>
>>>> private void Form1_Load(object sender, EventArgs e)
>>>>
>>>> {
>>>>
>>>> label1.Text = variable;
>>>>
>>>> }
>>>>
>>>> private void button1_Click(object sender, EventArgs e)
>>>>
>>>> {
>>>>
>>>> variable = "a";
>>>>
>>>> }
>>>>
>>>> private void button2_Click(object sender, EventArgs e)
>>>>
>>>> {
>>>>
>>>> variable = "b";
>>>>
>>>> }
>>>>
>>>> private void button3_Click(object sender, EventArgs e)
>>>>
>>>> {
>>>>
>>>> MessageBox.Show(variable);
>>>>
>>>> }
>>>>
>>>> }
>>>>
>>>>
>>>>
>>>> thanks a lot!
>>>>
>>>> Pablo
>>>>
>>>>
>>>
>>>
>>
>>
>
>