ICommand. What am I doing wrong?
shapper
I am not sure if this question is for this forum. It is a WPF C#
question.
I implemented a ICommand interface as follows:
public class SetupCommand : ICommand {
Boolean CanExecute(Object parameter) {
return true;
} // CanExecute
void Execute(Object parameter) {
Setup setup = new Setup();
setup.Run();
} // Execute
} // SetupCommand
On my WPF window I am adding a menu at runtime:
Menu menu = new Menu();
menu.Items.Add(new MenuItem { Command = SetupCommand, Header =
"Setup" });
In Command of the menu item it says:
System.Windows.Input.ICommand MenuItem Command
Gets or sets the command associated to the menu item. This is a
dependency property.
I get the following error:
'SetupCommand' is a 'type' but is used like a 'variable'.
I also tried to wrap the SetupCommand in a MenuCommands class and
expose it through a property:
public class MenuCommands {
public ICommand Setup { get { return new SetupCommand(); } }
public class SetupCommand : ICommand {
Boolean CanExecute(Object parameter) {
return true;
} // CanExecute
void Execute(Object parameter) {
//Setup setup = new Setup();
//setup.Run();
} // Execute
} // SetupCommand
}
And on menu item I try:
menu.Items.Add(new MenuItem { Command = MenuCommands.Setup, Header =
"Setup" });
This does not work either.
It works if I use something like:
menu.Items.Add(new MenuItem { Command = ApplicationCommands.Close,
Header = "Close" });
ApplicationCommands is defined in System.Windows.Input.
What am I doing wrong in my implementation?
Thanks.
Miguel
shapper
Hello,
I just solved it. I needed to define the wrapper class as static and
the property to.
Thanks,
Miguel
shapper
Hi,
I am using the TextWriterProxy in the WPF application as follows:
TextBlock output = new TextBlock();
TextWriterProxy proxy = new TextWriterProxy();
proxy.Add(Console.Out);
StringBuilder sb = new StringBuilder();
StringWriter resultStringWriter = new StringWriter(sb);
proxy.Add(resultStringWriter);
output.Text = sb.ToString();
However, text block does not show any text. Any idea how to do this
integration?
The TextWriterProxy code is as follows:
public class TextWriterProxy : TextWriter {
private List<TextWriter> _writers = new List<TextWriter>();
public override Encoding Encoding { get { return
Encoding.Default; } } // Encoding
public override string NewLine {
get { return base.NewLine; }
set {
foreach (TextWriter tw in _writers)
tw.NewLine = value;
base.NewLine = value;
}
} // NewLine
public void Add(TextWriter writer) {
if (!_writers.Contains(writer))
_writers.Add(writer);
} // Add
public bool Remove(TextWriter writer) {
return _writers.Remove(writer);
} // Remove
public override void Write(char value) {
foreach (TextWriter tw in _writers)
tw.Write(value);
base.Write(value);
} // Write
public override void Close() {
foreach (TextWriter tw in _writers)
tw.Close();
base.Close();
} // Close
protected override void Dispose(bool disposing) {
foreach (TextWriter tw in _writers)
tw.Dispose();
base.Dispose(disposing);
} // Dispose
public override void Flush() {
foreach (TextWriter tw in _writers)
tw.Flush();
base.Flush();
} // Flush
} // TextWriterProxy
Thanks,
Miguel
shapper
Sorry, wrong thread.