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    using system;
    using system. collections.generic;
    using system. componentmodel;
    using system. data;
    using system. drawing;
    using system. text;
    using system. windows.forms;

    namespace windowsapplication2
    {
    public partial class amamenu : form
    {
    public string islem;
    public int sayi;
    public amamenu()
    {
    initializecomponent();

    }

    private void timer1_tick(object sender, eventargs e)
    {
    toolstripstatuslabel1.text = convert. tostring(datetime.now).substring(0, 10);
    toolstripstatuslabel5.text = datetime.now. tostring().substring(11,8);

    }

    private void btnekle_click(object sender, eventargs e)
    {
    combobox1.items.add(combobox1.text);//yazýlaný comboya item olark ekle
    combobox1.text = "";


    }

    private void enter(object sender, previewkeydowneventargs e)
    {
    combobox1.items.add(combobox1.text);
    }

    private void amamenu_load(object sender, eventargs e)
    {
    toolstripstatuslabel6.text = datetime. today.tolongdatestring();
    }

    private void button1_click_2(object sender, eventargs e)
    {
    txtsonuc. text = txtsonuc. text + "1";
    }

    private void btn2_click(object sender, eventargs e)
    {
    txtsonuc. text = txtsonuc. text + "2";
    }

    private void btn3_click(object sender, eventargs e)
    {
    txtsonuc. text = txtsonuc. text + "3";
    }

    private void btn4_click(object sender, eventargs e)
    {
    txtsonuc. text = txtsonuc. text + "4";
    }

    private void btn5_click(object sender, eventargs e)
    {
    txtsonuc. text = txtsonuc. text + "5";
    }

    private void btn6_click(object sender, eventargs e)
    {
    txtsonuc. text = txtsonuc. text + "6";
    }

    private void btn7_click(object sender, eventargs e)
    {
    txtsonuc. text = txtsonuc. text + "7";
    }

    private void btn8_click(object sender, eventargs e)
    {
    txtsonuc. text = txtsonuc. text + "8";
    }

    private void btn9_click(object sender, eventargs e)
    {
    txtsonuc. text = txtsonuc. text + "9";
    }

    private void btn0_click(object sender, eventargs e)
    {
    txtsonuc. text = txtsonuc. text + "0";
    }

    private void btntemizle_click(object sender, eventargs e)
    {
    txtsonuc. text = "";
    }

    private void btntopla_click(object sender, eventargs e)
    {
    sayi = convert. toint32(txtsonuc. text);
    txtsonuc. text = "";
    islem = "topla";
    }

    private void btncikart_click(object sender, eventargs e)
    {
    sayi = convert. toint32(txtsonuc. text);
    txtsonuc. text = "";
    islem = "cikart";
    }

    private void btncarp_click(object sender, eventargs e)
    {
    sayi = convert. toint32(txtsonuc. text);
    txtsonuc. text = "";
    islem = "carp";
    }

    private void btnbol_click(object sender, eventargs e)
    {
    sayi = convert. toint32(txtsonuc. text);
    txtsonuc. text = "";
    islem = "bol";
    }

    private void btnesit_click(object sender, eventargs e)
    {
    switch (islem)
    {
    case "topla": txtsonuc. text = convert. tostring(sayi + convert. toint32(txtsonuc. text)); break;
    case "cikart": txtsonuc. text = convert. tostring(sayi - convert. toint32(txtsonuc. text)); break;
    case "carp": txtsonuc. text = convert. tostring(sayi * convert. toint32(txtsonuc. text)); break;
    case "bol": txtsonuc. text = convert. tostring(sayi / convert. todouble(txtsonuc. text)); break;

    }
    }

    private void çýkýþtoolstripmenuitem1_click(object sender, eventargs e)
    {
    this. close();
    }

    private void button1_click_3(object sender, eventargs e)//checkedlist boxtaki nesnelerin cekli olup olmadýný kontrol eder.
    {
    int a = checkedlistbox1.items. count - 1;//i=0 dan baþladýðýndan
    for (int i = 0; i <= a; i++)
    {
    if (checkedlistbox1.getitemchecked(i))//index elemanýný kontrol eder
    messagebox. show("cekli");
    else
    messagebox. show("çeksiz");
    }

    }

    private void combobox2_selectedindexchanged(object sender, eventargs e)
    {
    toolstripstatuslabel4.text = combobox2.text;//statusa comboboxýn seçili texini yazdýrýr
    }

    private void button3_click(object sender, eventargs e)
    {
    toolstripstatuslabel4.text = textbox1.text;//status panele textboxý yazdýrýr
    }

    private void treeview1_afterselect(object sender, treevieweventargs e)
    {
    //messagebox. show(treeview1.selectednode. text+" "+treeview1.selectednode. index);//seçili treevievi eekrana yazdýrýr
    listbox1.items.add(treeview1.selectednode. text + " " + treeview1.selectednode. index);//lýstboxa yazdirma
    //messagebox. show(treeview1.selectednode. selectedimageindex.tostring());//seçili image indexi ekrana yazdýr

    }

    private void button5_click(object sender, eventargs e)
    {
    if (radiobutton2.checked) treeview1.selectednode. nodes.add(textbox2.text);//dal nod ekleme
    else if (radiobutton1.checked) treeview1.nodes.add(textbox2.text);//kök nod ekleme
    }

    private void button4_click(object sender, eventargs e)
    {
    treeview1.selectednode. remove();//seçili nodu siler
    }

    private void button6_click(object sender, eventargs e)
    {
    tabcontrol1.selectedindex=2;//2 nolu indexteki tabý çaðýrýr
    }

    private void tabcontrol1_click(object sender, eventargs e)
    {
    messagebox. show("seçili tap ýndex="+tabcontrol1.selectedindex. tostring());//secili tabýn indexini verir.
    }

    private void treeview1_click(object sender, eventargs e)
    {

    }

    private void button7_click(object sender, eventargs e)
    {
    messagebox. show(treeview1.selectednode. text+ " selectedýmageýndexi="+treeview1.selectednode. selectedimageindex.tostring());
    //seçilen dalýn selectedimagelistini gösterir
    }

    private void treeview1_doubleclick(object sender, eventargs e)
    {
    switch (treeview1.selectednode. selectedimageindex.tostring()) //seçili nodeyi çift týklamayla switch ledi
    {
    case "0": tabcontrol1.selectedindex = 0; break;
    case "1": tabcontrol1.selectedindex = 1; break;
    case "2": tabcontrol1.selectedindex = 2; break;

    }
    treeview1.focus();

    }

    private void treeview1_keydown(object sender, keyeventargs e)
    {
    if (e.keycode == keys. enter)//klavyeden basýlan tuþ enter ise seçili treenin selectedimageindexini alarak tabýn secili indexine atar.
    {

    treeview1_doubleclick(sender, e);//treeview in çift týklamasýný çaðýr

    }
    treeview1.focus();
    }

    }
    }
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