chaffinsjc
asked on
How to access programmatically created buttons
In a simple C# WinForm program, I can programmatically create five button controls with code such as:
...
InitializeComponent();
CreateRowOfButtons("r1");
//r1_Button2.BackColor = System.Drawing.Color.Red; <===PROBLEM: this line does not compile
...
And then these two methods are added to Form1:
public void CreateRowOfButtons(string r)
{
//Variables
int X = 50; //initial location of button
int Y = 50; //initial location of button
for (int i = 1; i < 6; i++)
{
Button btn = new Button();
btn.Name = r + "_Button" + i.ToString(); //r1_Button1, r1_Button2, r1_Button3...
btn.Size = new System.Drawing.Size(30, 30); ;
btn.Location = new System.Drawing.Point(X, Y);
btn.Click += new System.EventHandler(AnyBut
Controls.Add(btn);
X += 40;
}
}//end CreateRowOfButtons()
public void AnyButtonClick(Object sender, System.EventArgs e)
{
Button myBtn = (Button)sender;
myBtn.BackColor = Color.Red;
}//end AnyButtonClick()
PROBLEM: How do I access these buttons and get/set values after they are created but before user mouse events? Yes, I realize that during CreateRowOfButtons() I might set button r1_Button3 to "Red", but I wonder if there isn't some other way.
...
InitializeComponent();
CreateRowOfButtons("r1");
//r1_Button2.BackColor = System.Drawing.Color.Red; <===PROBLEM: this line does not compile
...
And then these two methods are added to Form1:
public void CreateRowOfButtons(string r)
{
//Variables
int X = 50; //initial location of button
int Y = 50; //initial location of button
for (int i = 1; i < 6; i++)
{
Button btn = new Button();
btn.Name = r + "_Button" + i.ToString(); //r1_Button1, r1_Button2, r1_Button3...
btn.Size = new System.Drawing.Size(30, 30); ;
btn.Location = new System.Drawing.Point(X, Y);
btn.Click += new System.EventHandler(AnyBut
Controls.Add(btn);
X += 40;
}
}//end CreateRowOfButtons()
public void AnyButtonClick(Object sender, System.EventArgs e)
{
Button myBtn = (Button)sender;
myBtn.BackColor = Color.Red;
}//end AnyButtonClick()
PROBLEM: How do I access these buttons and get/set values after they are created but before user mouse events? Yes, I realize that during CreateRowOfButtons() I might set button r1_Button3 to "Red", but I wonder if there isn't some other way.
ASKER CERTIFIED SOLUTION
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silemone
I don't thinks its that simple...i would debug and see if its getting to AnyButtonClick...because you code i correct...I'm sure intellisense pops up and shows you these options, yes?
SOLUTION
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True, if you wanted to make changes to properties and execute methods that were specific to the Button class, you'd have to cast the this.Controls["r1_button2"
ASKER
I got both solutions to work. graye's answer was directly applicable to my problem (thank you so much). I also learned a lot and found the solution by Idle_Mind to be intriguing for possible future use. (thank you also).