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How do I access this?

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Join Date: Jul 2008

Posts: 47

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ctrl-alt-del ctrl-alt-del is offline

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How do I access this?

Sep 19th, 2009

Hi all!

As you probably have guessed, I have a problem. And as such I would like to use your collective knowledge so I can continue.

I have a form that has a crapload of buttons on it. so, because I was being lazy, I created myself a ButtonGenerator. Here is the code for that:

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 C# Syntax (Toggle Plain Text) 
public void ButtonGenerator(string ButtonName, string ButtonText, int ButtonHeight, int ButtonWidth, int ButtonTop, int ButtonLeft)
		{
			Button NewButton = new Button();
			NewButton.Name = ButtonName;
			NewButton.Text = ButtonText;
			NewButton.Height = ButtonHeight;
			NewButton.Width = ButtonWidth;
			NewButton.Top = ButtonTop;
			NewButton.Left = ButtonLeft;
			this.Controls.Add(NewButton);
		}
public void ButtonGenerator(string ButtonName, string ButtonText, int ButtonHeight, int ButtonWidth, int ButtonTop, int ButtonLeft)
		{
			Button NewButton = new Button();
			NewButton.Name = ButtonName;
			NewButton.Text = ButtonText;
			NewButton.Height = ButtonHeight;
			NewButton.Width = ButtonWidth;
			NewButton.Top = ButtonTop;
			NewButton.Left = ButtonLeft;
			this.Controls.Add(NewButton);
		}

so I can use something like this:

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 C# Syntax (Toggle Plain Text) 
ButtonGenerator("ButtonQ", "Q", 20, 20, 60, 20);
ButtonGenerator("ButtonQ", "Q", 20, 20, 60, 20);

However...

Now I require my program to sort of highlight a button. This can be done by changing the backgroundcolor of it, or setting the Selected property to true, or whatever way, I don't really care as long as it is clear which button is about to do it's thing.

But how do I access the buttons? I hoped that by adding a Name property I would be able to acces it somehow. I either I can't figure out how, or that is not how it works.

So... How does it work?

Thanks in advance for any answers provided!

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Join Date: Mar 2008

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Diamonddrake Diamonddrake is offline

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Re: How do I access this?

Sep 19th, 2009

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
Button B = this.Controls[buttonname];
Button B = this.Controls[buttonname];

That should work for what you are looking for.
or you could add each control to a list and access it that way, I can think of a lot of ways, but this is the simplest.

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Join Date: Feb 2009

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sknake

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Re: How do I access this?

Sep 19th, 2009

Here is a not so simple way to do it. Ideally using the name as Diamonddrake provided would be the best so you know what button you are referencing. To find all of the buttons you could use this approach:

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 C# Syntax (Toggle Plain Text) 
    private void button3_Click(object sender, EventArgs e)
    {
      Button[] btns = (Button[])FindControls(this, typeof(Button));
      foreach (Button btn in btns)
        btn.BackColor = Color.Red;
    }
 
    private static Array FindControls(Control ctrl, Type t)
    {
      System.Collections.ArrayList result = new System.Collections.ArrayList();
      foreach (Control c in ctrl.Controls)
      {
        if ((c.GetType() == t) || c.GetType().IsSubclassOf(t))
          result.Add(c);
        foreach (Control childCtrl in c.Controls)
          result.AddRange(FindControls(childCtrl, t));
      }
      return result.ToArray(t);
    }
    private void button3_Click(object sender, EventArgs e)
    {
      Button[] btns = (Button[])FindControls(this, typeof(Button));
      foreach (Button btn in btns)
        btn.BackColor = Color.Red;
    }

    private static Array FindControls(Control ctrl, Type t)
    {
      System.Collections.ArrayList result = new System.Collections.ArrayList();
      foreach (Control c in ctrl.Controls)
      {
        if ((c.GetType() == t) || c.GetType().IsSubclassOf(t))
          result.Add(c);
        foreach (Control childCtrl in c.Controls)
          result.AddRange(FindControls(childCtrl, t));
      }
      return result.ToArray(t);
    }