simple databinding of a simple string to textbox

[Robert Ludig]

How do I bind a textbox to a simple string varaible with databinding?

I managed to do the binding but unfortnatedly the textvox does not get
updated when I change the string wich the textbox is bound to. I though
this automation is on of the purposes of the databinding ... ? What am
I doing wrong ?

See this little example code:

using System;
using System.Componen tModel;
using System.Drawing;
using System.Windows. Forms;
namespace DataBindingText 2
{
public class Form1 : Form
{
private TextBox textBox1;
private Container components = null;
private Button button1;
private string mystr = "hallo";

public Form1()
{
InitializeCompo nent();
textBox1.DataBi ndings.Add(new Binding("Text", mystr,""));
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Disp ose();
}
}
base.Dispose( disposing );
}
private void InitializeCompo nent()
{
this.textBox1 = new TextBox();
this.button1 = new Button();
this.SuspendLay out();
//
// textBox1
//
this.textBox1.L ocation = new Point(8, 16);
this.textBox1.N ame = "textBox1";
this.textBox1.S ize = new Size(408, 20);
this.textBox1.T abIndex = 0;
this.textBox1.T ext = "textBox1";
//
// button1
//
this.button1.Lo cation = new Point(8, 48);
this.button1.Na me = "button1";
this.button1.Si ze = new Size(408, 48);
this.button1.Ta bIndex = 1;
this.button1.Te xt = "change bound data";
this.button1.Cl ick += new EventHandler(th is.button1_Clic k);
//
// Form1
//
this.AutoScaleB aseSize = new Size(5, 13);
this.ClientSize = new Size(432, 118);
this.Controls.A dd(this.button1 );
this.Controls.A dd(this.textBox 1);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayo ut(false);

}
[STAThread]
static void Main()
{
Application.Run (new Form1());
}
private void button1_Click(o bject sender, EventArgs e)
{
mystr += mystr;
}
}
}

[Ravichandran J.V.]

A correction to my previous post.

"textBox1.DataB indings.Add(new Binding("Text", mystr,""));"

In VB.net, you can simply pass the Property name and the object as
parameters than as a new Binding object. Maybe, it is the same in C#.
Why don't you try

textBox1.DataBi ndings.Add("Tex t",mystr,"Prope rtyNameOftheObj ect");

"PropertyNameOf theObject" is the datastore/member of the mystr object.

with regards,
J.V.Ravichandra n
- http://www.geocities.com/
jvravichandran
- http://www.411asp.net/func/search?
qry=Ravichandra n+J.V.&cob=aspn etpro
- http://www.southasianoutlook.com
- http://www.MSDNAA.Net
- http://www.csharphelp.com
- http://www.poetry.com/Publications/
display.asp?ID= P3966388&BN=999 &PN=2
- Or, just search on "J.V.Ravichandr an"
at http://www.Google.com

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[Ravichandran J.V.]

textBox1.DataBi ndings.Add(new Binding("Text", mystr,""));

In VB.net, you can simply pass the Property name and the object as
parameters than as a new Binding object. Maybe, it is the same in C#.
Why don't you try

textBox1.DataBi ndings.Add("Tex t",mystr);
with regards,
J.V.Ravichandra n
- http://www.geocities.com/
jvravichandran
- http://www.411asp.net/func/search?
qry=Ravichandra n+J.V.&cob=aspn etpro
- http://www.southasianoutlook.com
- http://www.MSDNAA.Net
- http://www.csharphelp.com
- http://www.poetry.com/Publications/
display.asp?ID= P3966388&BN=999 &PN=2
- Or, just search on "J.V.Ravichandr an"
at http://www.Google.com

*** Sent via Developersdex http://www.developersdex.com ***
Don't just participate in USENET...get rewarded for it!

[Robert Ludig]

Ravichandran J.V. wrote:

"PropertyNameO ftheObject" is the datastore/member of the mystr object.

Now that is exactly my problem. mystr is a string object, how can it
have datastore/member. What do I need to specify as
"PropertyNameOf theObject"

???