Pass multiple components to single function

Question

I have no idea how to pass a large amount of objects to a single function. I have multiple textboxes that I need to compare. I want to write a generic function that checks to see if a textbox.text is between two values. I have to do this for 20 or so boxes. I can use the a textbox by name but how do I make a list of specific text boxes and then either pass them one by one in a loop?

Brandon Lewis · Answer

I think I gave you the idea for a function earlier, you dont have to know what specific text box it is, just if its a text box or not. private bool IsTextInputValid( TextBox textBox) { int textBoxValue = 0; if ( Int32 .TryParse(textBox.Text, out textBoxValue)) { if (textBoxValue > 0 && textBoxValue // 0 and 10 are arbitrary numbers... { return true ; } } else return false ; } Alternatively you could attach a Validating event handler to each TextBox, but make the handler method the same for each text box. // Assuming the event handler has already been attached to each text box. private void textBox_Validating ( object sender, CancelEventArgs e) { int textBoxValue = 0; TextBox validatingBox = null ; if ((sender as TextBox ) != null ) { if ( Int32 .TryParse(textBox.Text, out textBoxValue)) { if (textBoxValue 10) // 0 and 10 are arbitrary numbers... { // notify user some how, use an ErrorProvider control maybe? } } else { // notify user some how, use an ErrorProvider control maybe? } } } This is the way I use most of the time. Its clean and I can handle multiple text boxes with it so long as I attach the handler to their Validating event.