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using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
using System.IO.IsolatedStorage;
namespace IsolatedStorageDemo{
public class Form1 : System.Windows.Forms.Form{
#region "datamember"
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.RichTextBox richTextBox1;
private System.Windows.Forms.Button button3;
private System.ComponentModel.Container components = null;
#endregion
#region "ctor"
public Form1(){
InitializeComponent();
}
#endregion
#region "dtor"
protected override void Dispose( bool disposing ){
if( disposing ){
if (components != null) {
components.Dispose();
}
}
base.Dispose( disposing );
}
#endregion
#region Vom Windows Form-Designer generierter Code
/// <summary>
/// Erforderliche Methode für die Designerunterstützung.
/// Der Inhalt der Methode darf nicht mit dem Code-Editor geändert werden.
/// </summary>
private void InitializeComponent()
{
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.richTextBox1 = new System.Windows.Forms.RichTextBox();
this.button3 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// button1
//
this.button1.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.button1.Location = new System.Drawing.Point(16, 16);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(312, 23);
this.button1.TabIndex = 0;
this.button1.Text = "Isolated Storage File laden";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.button2.Location = new System.Drawing.Point(16, 48);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(312, 23);
this.button2.TabIndex = 1;
this.button2.Text = "In Isolated Storage File schreiben";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// richTextBox1
//
this.richTextBox1.Location = new System.Drawing.Point(16, 112);
this.richTextBox1.Name = "richTextBox1";
this.richTextBox1.Size = new System.Drawing.Size(312, 232);
this.richTextBox1.TabIndex = 2;
this.richTextBox1.Text = "";
//
// button3
//
this.button3.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.button3.Location = new System.Drawing.Point(16, 80);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(312, 23);
this.button3.TabIndex = 3;
this.button3.Text = "Isolated Storage File löschen";
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(352, 358);
this.Controls.Add(this.button3);
this.Controls.Add(this.richTextBox1);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Name = "Form1";
this.Text = "Isolated Storage Demo";
this.ResumeLayout(false);
}
#endregion
[STAThread]
static void Main() {
Application.EnableVisualStyles();
Application.Run(new Form1());
}
private void button1_Click(object sender, System.EventArgs e) {
if ( this.CheckForIsoFile(this.GetIsolatedStorage()) ){
this.richTextBox1.Text = this.ReadFromIsoFile(this.GetIsolatedStorage());
}
else{
MessageBox.Show("Konnte den Isolierten Speicherbereich nicht finden!");
}
}
private IsolatedStorageFile GetIsolatedStorage(){
IsolatedStorageFile isoStore = IsolatedStorageFile.GetStore(IsolatedStorageScope.User | IsolatedStorageScope.Assembly , null, null);
return isoStore;
}
private bool CheckForIsoFile(IsolatedStorageFile isoStore){
string[] fileNames = isoStore.GetFileNames("test.txt");
bool blfilefound = false;
foreach (string file in fileNames){
if(file == "test.txt"){
blfilefound = true;
}
}
return blfilefound;
}
private void WriteToIsoFile(IsolatedStorageFile isoStore, string inputvalue){
try{
StreamWriter writer = null;
if ( this.CheckForIsoFile( this.GetIsolatedStorage() ) ){
writer = new StreamWriter( new IsolatedStorageFileStream("test.txt", FileMode.Append, FileAccess.Write, isoStore));
}
else{
writer = new StreamWriter(new IsolatedStorageFileStream("test.txt", FileMode.CreateNew,isoStore));
}
writer.Write(inputvalue);
writer.Close();
}
catch ( Exception eXP ){
MessageBox.Show( eXP.Message );
}
}
public string ReadFromIsoFile(IsolatedStorageFile isoStore){
System.Text.StringBuilder strBldResult;
bool blfilefound = false;
blfilefound = this.CheckForIsoFile(isoStore);
if ( blfilefound ){
StreamReader reader = new StreamReader(new IsolatedStorageFileStream("test.txt", FileMode.Open,isoStore));
strBldResult = new System.Text.StringBuilder();
strBldResult.Append( reader.ReadToEnd() );
reader.Close();
return strBldResult.ToString();
}
else{
return string.Empty;
}
}
private void button2_Click(object sender, System.EventArgs e) {
this.WriteToIsoFile(this.GetIsolatedStorage(), this.richTextBox1.Text);
}
private void button3_Click(object sender, System.EventArgs e) {
try{
IsolatedStorageFile isoStore = this.GetIsolatedStorage();
if ( this.CheckForIsoFile(isoStore ) ){
isoStore.DeleteFile("test.txt");
}
}
catch ( Exception eXP ){
MessageBox.Show( eXP.Message );
}
}
};
} |