c# - How to call A) a textBox B) And button click event inside a Form(That is created through a class in a button click event) -

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• communicate between 2 windows forms in c# 10 answers

i created class

public static class prompt {    public static form showcategorydialog()    {        form addcategorydialog = new form()        {            width = 500,            height = 150,            formborderstyle = formborderstyle.fixeddialog,            text = "caption",            startposition = formstartposition.centerscreen        };        label textlabel = new label() { left = 50, top = 20, text = "asd" };        textbox textbox = new textbox() { left = 50, top = 50, width = 400 };        button confirmation = new button() { text = "ok", left = 350, width =          100, top = 70, dialogresult = dialogresult.ok };        confirmation.click += (sender, e) => { addcategorydialog.close(); };        addcategorydialog.controls.add(textbox);        addcategorydialog.controls.add(confirmation);        addcategorydialog.controls.add(textlabel);        addcategorydialog.acceptbutton = confirmation;         return addcategorydialog;     } } 

now in form's button click event

private void addcateogoryclick(object sender, eventargs e)     {         form = new form();         = prompt.showcategorydialog();         a.showdialog();     } 

there, textbox, button , label created in form , form assigned form 'a'. since form 'a' has textbox, button , label, want call them like

if(a.textbox.text == string.empty) { //do } 

and access it's button_click event also, like

a.button_click {   if(button.text == "ok")   //do } 

summing up: dont know how access form's control(textbox, button etc) , dont know how use events in situation.

derive new class form. in constructor add controls same way in showcategorydialog(), , each control add property let access control. e.g. sample shows how button:

public class categorydialog : form {     public categorydialog()     {         button1 = new button() { text = "ok", left = 350, width = 100, top = 70, dialogresult = dialogresult.ok };         controls.add(button1);     }      button button1;      // property let access button     public button button1 { { return button1; } } } 

when create instance of form, can access button this:

categorydialog = new categorydialog(); a.button1.text = ... 

events (like button click) accessible automatically without doing anything. e.g.

a.button1.click += (sender, e) => {     //sender parameter contains instance of button clicked     var button = sender button;     if(button.propertytobechecked == ...)//check whatever want     ... }; 

if using visual studio, it's simpler. add new form project (it create derived class automatically), drag controls (button, label, etc.) form , click on each control , change it's property "modifiers" public.