I A Form és a párbeszédablakok I.1. MessageBox osztály MessageBox.Show(szöveg[,cím[,gombok[,ikon[,defaultbutton]]]]);

Transcription

1 I A Form és a párbeszédablakok I.1. MessageBox osztály MessageBox.Show(szöveg[,cím[,gombok[,ikon[,defaultbutton]]]]); szöveg, cím gomb ikon defaultbutton String - MessageBoxButtons.OK - MessageBoxIcon.Asterix.Error.OKCancel.Question - MessageBoxDefaultButton.Button1.Button2 - felsorolás - felsorolas.button3 - felsorolás 1

2 I.2. Közös dialógusok colordialog.color fontdialog.font openfiledialog, savefiledialog.initialdirectory.defaultextension.filename.showdialog() - DialogResult I.3 Modális és nem modális párbeszédablakok Form.Show() Form.ShowDialog(); vezérlő.dialogresult DialogResult.OK if (f.dialogresult==dialogresult.ok).cancel - felsorolt 1. Készítsünk párbeszédablakot! 2. Állítsuk be a háttérszínt! 2

3 openfiledialog1.initialdirectory = Application.ExecutablePath; openfiledialog1.filter = "txt files (*.txt) *.txt All files (*.*) *.*"; openfiledialog1.filterindex = 2; if ( openfiledialog1.showdialog() == System.Windows.Forms.DialogResult.OK ) String s1=openfiledialog1.filename; String s2=openfiledialog1.filename+"_"; File.Copy(s1,s2); this.text = openfiledialog1.filename; II Állománykezelés II.1 File dialógusok opendialog savedialog Filter, FilterIndex, MultiSelect FileName / FileNames openfiledialog1.initialdirectory = "c:\\"; openfiledialog1.filter = "txt files (*.txt) *.txt All files (*.*) *.*"; openfiledialog1.filterindex = 2; if ( openfiledialog1.showdialog() == System.Windows.Forms.DialogResult.OK ) this.text = openfiledialog1.filename; II.2 File Class using System.IO; static bool Exists(String path) static void Delete(String path) static void Copy(String source, String dest); static void Copy( String source, String dest, bool overwrite ) static void Replace(String mit, String mivel, String backup); static void Replace(String mit, String mivel, String backup, bool siker);

4 using System; using System.Collections.Generic; using System.Linq; using System.Threading.Tasks; using System.Windows.Forms; namespace dialog static class Program /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main() Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); Application.Run(new Form1()); //Application.Run(new Dialog()); 4

5 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace dialog public partial class Dialog : Form public string inf; public Dialog() InitializeComponent(); private void button1_click(object sender, EventArgs e) this.close(); private void button2_click(object sender, EventArgs e) this.close(); private void textbox1_textchanged(object sender, EventArgs e) inf = textbox1.text; 5

6 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; using System.IO; namespace dialog public partial class Form1 : Form public Form1() InitializeComponent(); private void button1_click(object sender, EventArgs e) if (DialogResult.OK== MessageBox.Show("Hello", "Üzenet", MessageBoxButtons.OKCancel, MessageBoxIcon.Question)) this.text = "OK"; else this.text = "Mégse"; 6

7 private void button2_click(object sender, EventArgs e) Dialog d = new Dialog(); if (d.showdialog() == DialogResult.OK) this.text = d.inf; else this.text = "Nem változott"; private void button3_click(object sender, EventArgs e) Dialog d = new Dialog(); d.show(); int i = 12; private void színtoolstripmenuitem_click(object sender, EventArgs e) colordialog1.color = Color.Yellow; if (colordialog1.showdialog() == DialogResult.OK) this.backcolor = colordialog1.color; private void betűtiptoolstripmenuitem_click(object sender, EventArgs e) fontdialog1.font = label1.font; if (fontdialog1.showdialog() == DialogResult.OK) label1.font = fontdialog1.font; label1.text = label1.font.name; 7

8 private void Form1_Load(object sender, EventArgs e) label1.text = label1.font.name; private void fileopentoolstripmenuitem_click(object sender, EventArgs e) openfiledialog1.initialdirectory = "C:\\"; openfiledialog1.filter = "(Minden file) *.* (Szöveg file) *.txt"; openfiledialog1.filterindex = 0; if (openfiledialog1.showdialog() == DialogResult.OK) this.text = openfiledialog1.filename; else this.text = "Semmi"; private void openfiledialog1_fileok(object sender, CancelEventArgs e) private void filesavetoolstripmenuitem_click(object sender, EventArgs e) if (savefiledialog1.showdialog() == DialogResult.OK) this.text = savefiledialog1.filename; 8

9 private void deletetoolstripmenuitem_click(object sender, EventArgs e) if (openfiledialog1.showdialog() == DialogResult.OK) File.Delete(openFileDialog1.FileName); private void filecopytoolstripmenuitem_click(object sender, EventArgs e) if (openfiledialog1.showdialog()== DialogResult.OK) if (savefiledialog1.showdialog() == DialogResult.OK) File.Copy( openfiledialog1.filename, savefiledialog1.filename); 9