Retrieve active control, check if it is a textbox and insert text.

[Spyru]

I would like to...

 

... retrieve the active control

... check if it is a textbox

... insert some text in it

 

Thanks

 

grtz, Spyru :p

[aewarnick]

Here is one snippet:

foreach(Control c in this.Controls)
						{
							try
							{
								if(c is Label || c is GroupBox || c is Panel || c is LinkLabel || c is CheckBox || c is RadioButton)
									((Control)c).BackColor= Color.FromArgb(0,0,0,0);

Here is a full method:

/// <summary>
		/// Returns the focused control on a form. If you want only the focused control of a panel or tab page ext.
		/// Just make f null and send a control to the method otherwise make c null and send a whole form. Returns
		/// null if no control is focused.
		/// </summary>
		public static Control GetFocusedControl(Form f, Control c)
		{
			if(f != null)
			{
				foreach(Control d in f.Controls)
				{
					if(d.Focused)
					{
						FocusedControl= d;
					}
					else
					{
						GetFocusedControl(null, d);
					}
				}
			}
			else if(c != null)
			{
				foreach(Control d in c.Controls)
				{
					if(d.Focused)
					{
						FocusedControl= d;
					}
					else
					{
						GetFocusedControl(null, d);
					}
				}
			}
			return FocusedControl;
		}

[aewarnick]

this.Text.Insert(10, "Insert this at index 10");

[Spyru]

I am sorry, I forgot to say I was working with Visual Basic .NET. :eek:

[aewarnick]

.net languages are very similar. You can probably translate to make your own code.

[Spyru]

Yeah I think I can do that, but how do I retrieve the width of my form. Because when I use

pgbLaden.Left = Form1.ActiveForm.Width - 142

I get an error:

An unhandled exception of type 'System.NullReferenceException' occurred in VideoBase.exe

 

Additional information: Object reference not set to an instance of an object.

 

grtz Spyru

[aewarnick]

Me.Width and Me.Height

Me.ClientWidth and Me.ClientHeight - without title bar.

 

When you get that type of exception it means that one of your variables is nothing. It has been declared but has no value at all.

[Spyru]

Thanks aewarnick, you were great ;P