в 15:31, 26 мая 2010

2010-05-26T15:31:18Z

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2010-05-26T11:33:06Z

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==Call ShowDialog() to display an OpenFileDialog==

<source lang="csharp">
using System;
using System.Windows.Forms;
class MainClass {
static void Main(string[] args) {
OpenFileDialog dlg = new OpenFileDialog();
if (dlg.ShowDialog() == DialogResult.OK) {
Console.WriteLine(dlg.FileName);
}
}
}
</source>

==Demonstrates using an OpenFileDialog to prompt for a file name, and to open a file==

<source lang="csharp">
/*
C# Programming Tips & Techniques
by Charles Wright, Kris Jamsa
Publisher: Osborne/McGraw-Hill (December 28, 2001)
ISBN: 0072193794
*/
// ReadIn.cs -- Demonstrates using an OpenFileDialog to prompt for a
// file name, and to open a file
//
// Compile this program with the following command line:
// C:>csc ReadIn.cs
using System;
using System.IO;
using System.Windows.Forms;
namespace nsStreams
{

public class ReadIn
{
[STAThread]
static public void Main (string [] args)
{
OpenFileDialog fileOpen = new OpenFileDialog ();
if (args.Length == 0)
{
fileOpen.InitialDirectory = ".\\";
fileOpen.Filter = "Text files (*.txt)|*.txt|All files (*.*)|*.*";
fileOpen.FilterIndex = 0;
fileOpen.RestoreDirectory = false; //true;
// if (fileOpen.ShowDialog () == DialogResult.Cancel)
if (fileOpen.ShowDialog () != DialogResult.OK)
{
return;
}
}
else
{
fileOpen.FileName = args[0];
}
Stream strm;
StreamReader reader;
try
{
strm = fileOpen.OpenFile ();
reader = new StreamReader (strm);
}
catch (Exception e)
{
string Message = e.Message + "\n\nCannot open "
+ fileOpen.FileName;
MessageBox.Show (Message, "Open error",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
return;
}
Console.Write (reader.ReadToEnd ());
reader.Close ();
strm.Close ();
}
}
}

</source>

==FileOk Action==

<source lang="csharp">
using System;
using System.IO;
using System.Windows.Forms;
class FileDialogApp {
private static OpenFileDialog ofd;
static void Main(string[] args) {
ofd = new OpenFileDialog();
string s = Path.GetDirectoryName(Path.GetDirectoryName(Directory.GetCurrentDirectory()));
ofd.InitialDirectory = s;
ofd.FileOk += new System.ruponentModel.CancelEventHandler(ofd_OK);
ofd.ShowDialog();
}
public static void ofd_OK(object sender,
System.ruponentModel.CancelEventArgs e) {
StreamReader sr = new StreamReader(ofd.FileName);
string s;
while ((s = sr.ReadLine()) != null) {
Console.WriteLine(s);
}
sr.Close();
}
}
</source>

==Open File Dialog with file types==

<source lang="csharp">
/*
C# Programming Tips & Techniques
by Charles Wright, Kris Jamsa
Publisher: Osborne/McGraw-Hill (December 28, 2001)
ISBN: 0072193794
*/
namespace nsClassLib
{
using System;
using System.IO;
using System.Windows.Forms;

public class clsMainOpenFileDialog
{
[STAThread]
static public void Main ()
{
OpenFileDialog ofn = new OpenFileDialog ();
ofn.Filter = "C Sharp Files (*.cs)|*.cs|Text Files (*.txt)|*.txt";
ofn.Title = "Type File";
while (true)
{
if (ofn.ShowDialog () == DialogResult.Cancel)
return;
FileStream strm;
try
{
strm = new FileStream (ofn.FileName, FileMode.Open, FileAccess.Read);
StreamReader rdr = new StreamReader (strm);
while (rdr.Peek() >= 0)
{
string str = rdr.ReadLine ();
Console.WriteLine (str);
}
}
catch (Exception)
{
MessageBox.Show ("Error opening file", "File Error",
MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
ofn.Title = "Next File to Type";
}
}
}
}

</source>

==Set Filter==

<source lang="csharp">
using System;
using System.Windows.Forms;
class MainClass {
static void Main(string[] args) {
OpenFileDialog dlg = new OpenFileDialog();
dlg.Filter = "Rich Text Files (*.rtf)|*.RTF|" +
"All files (*.*)|*.*";
if (dlg.ShowDialog() == DialogResult.OK) {
Console.WriteLine(dlg.FileName);
}
}
}
</source>

==Set InitialDirectory==

<source lang="csharp">
using System;
using System.Windows.Forms;
class MainClass {
static void Main(string[] args) {
OpenFileDialog dlg = new OpenFileDialog();
dlg.InitialDirectory = Application.StartupPath;
if (dlg.ShowDialog() == DialogResult.OK) {
Console.WriteLine(dlg.FileName);
}
}
}
</source>

==shows browsing for a file==

<source lang="csharp">
/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy
Publisher: Sybex;
ISBN: 0782129110
*/
/*
Example15_1.cs shows browsing for a file
*/
using System;
using System.Windows.Forms;
public class Example15_1 {

[STAThread]
public static void Main() {
// create and show an open file dialog
OpenFileDialog dlgOpen = new OpenFileDialog();
if (dlgOpen.ShowDialog() == DialogResult.OK)
{
Console.Write(dlgOpen.FileName);
}
}
}

</source>

==shows browsing for a set of files==

<source lang="csharp">
/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy
Publisher: Sybex;
ISBN: 0782129110
*/

/*
Example15_2.cs shows browsing for a set of files
*/
using System;
using System.Windows.Forms;
public class Example15_2
{
[STAThread]
public static void Main()
{
// create an open file dialog
OpenFileDialog dlgOpen = new OpenFileDialog();

// set properties for the dialog
dlgOpen.Title = "Select one or more files";
dlgOpen.ShowReadOnly = true;
dlgOpen.Multiselect = true;
// display the dialog and return results
if (dlgOpen.ShowDialog() == DialogResult.OK)
{
foreach (string s in dlgOpen.FileNames)
Console.WriteLine(s);
}
}
}

</source>

==Show the use of some of the OpenFile dialog box==

<source lang="csharp">
/*
C# Programming Tips & Techniques
by Charles Wright, Kris Jamsa
Publisher: Osborne/McGraw-Hill (December 28, 2001)
ISBN: 0072193794
*/
// DlgSamp.cs -- Show the use of some of the OpenFile dialog box.
//
// Compile this program with the following command line:
// C:>csc DlgSamp.cs
using System;
using System.Windows.Forms;
using System.ruponentModel;
public class clsMainOpenFile
{
[STAThread]
static public void Main ()
{
// Create the dialog box object.
OpenFileDialog ofd = new OpenFileDialog ();
// Allow multiple file selection.
ofd.Multiselect = true;
// Set the text for the title bar.
ofd.Title = "Concatenate files";
// Do not verify that the file exists.
ofd.CheckFileExists = false;
// Do verify that the path exists.
ofd.CheckPathExists = true;
// Add a default extension if the user does not type one.
ofd.AddExtension = true;
// Set the default extension.
ofd.DefaultExt = "txt";
// Show the read-only box.
ofd.ShowReadOnly = true;
// Show the Help button.
ofd.ShowHelp = true;
// Call this method when the user clicks the OK (Open) button.
ofd.FileOk += new CancelEventHandler (CancelOpenFile);
// Call this method when the user clicks the Help button.
ofd.HelpRequest += new EventHandler (ShowOpenHelp);
// Show the dialog box.
if (ofd.ShowDialog () == DialogResult.Cancel)
return;
// Display a list of the selected files.
foreach (string str in ofd.FileNames)
Console.WriteLine (str);
}
// Delegate called when the user clicks the OK (Open) button
static private void CancelOpenFile (object sender, CancelEventArgs e)
{
// Cast the object to an OpenFileDialog object.
OpenFileDialog dlg = (OpenFileDialog) sender;
// Show the selected files.
Console.WriteLine ("The selected file are:");
foreach (string str in dlg.FileNames)
Console.WriteLine ("\t" + str);
// Ask whether to cancel the close event.
Console.Write ("\r\nCancel event? [y/n]: ");
string reply = Console.ReadLine ();
if (reply[0] == "y")
e.Cancel = true;
}
// Delegate called when the user clicks the Help button.
static private void ShowOpenHelp (object sender, EventArgs e)
{
Console.WriteLine ("Open your help file to the File Open topic here.");
}
}

</source>

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в 15:31, 26 мая 2010

Admin: 1 версия