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Fixes #4683. DynamicStatusBar is broken (#4684)

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* Fixes #4683. DynamicStatusBar is broken

* Replace to Key and avoid clear key button to close dialog
This commit is contained in:
BDisp
2026-02-06 21:42:29 +00:00
committed by GitHub
parent b43390a070
commit 83ea4a427d
1 changed files with 192 additions and 221 deletions
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413
Examples/UICatalog/Scenarios/DynamicStatusBar.cs
View File

@@ -1,7 +1,6 @@
using System;
#nullable enable
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Text;
@@ -12,49 +11,49 @@ namespace UICatalog.Scenarios;
[ScenarioCategory ("Arrangement")]
public class DynamicStatusBar : Scenario
{
private static IApplication? _app;
public override void Main ()
{
ConfigurationManager.Enable (ConfigLocations.All);
using IApplication app = Application.Create ();
app.Init ();
app.Run<DynamicStatusBarSample> ();
_app = app;
_app.Init ();
_app.Run<DynamicStatusBarSample> ();
}
public class Binding
{
private readonly PropertyInfo _sourceBindingProperty;
private readonly object _sourceDataContext;
private readonly IValueConverter _valueConverter;
private readonly PropertyInfo? _sourceBindingProperty;
private readonly object? _sourceDataContext;
private readonly IValueConverter? _valueConverter;
public Binding (
View source,
string sourcePropertyName,
View target,
string targetPropertyName,
IValueConverter valueConverter = null
IValueConverter? valueConverter = null
)
{
Target = target;
Source = source;
SourcePropertyName = sourcePropertyName;
TargetPropertyName = targetPropertyName;
_sourceDataContext = Source.GetType ().GetProperty ("DataContext").GetValue (Source);
_sourceBindingProperty = _sourceDataContext.GetType ().GetProperty (SourcePropertyName);
_sourceDataContext = Source.GetType ().GetProperty ("DataContext")?.GetValue (Source);
_sourceBindingProperty = _sourceDataContext?.GetType ().GetProperty (SourcePropertyName);
_valueConverter = valueConverter;
UpdateTarget ();
var notifier = (INotifyPropertyChanged)_sourceDataContext;
var notifier = (INotifyPropertyChanged)_sourceDataContext!;
if (notifier != null)
{
notifier.PropertyChanged += (s, e) =>
notifier.PropertyChanged += (_, e) =>
{
if (e.PropertyName == SourcePropertyName)
{
if (e.PropertyName == SourcePropertyName)
{
UpdateTarget ();
}
};
}
UpdateTarget ();
}
};
}
public View Source { get; }
@@ -66,7 +65,7 @@ public class DynamicStatusBar : Scenario
{
try
{
object sourceValue = _sourceBindingProperty.GetValue (_sourceDataContext);
object? sourceValue = _sourceBindingProperty?.GetValue (_sourceDataContext);
if (sourceValue == null)
{
@@ -75,8 +74,8 @@ public class DynamicStatusBar : Scenario
object finalValue = _valueConverter?.Convert (sourceValue) ?? sourceValue;
PropertyInfo targetProperty = Target.GetType ().GetProperty (TargetPropertyName);
targetProperty.SetValue (Target, finalValue);
PropertyInfo? targetProperty = Target.GetType ().GetProperty (TargetPropertyName);
targetProperty?.SetValue (Target, finalValue);
}
catch (Exception ex)
{
@@ -87,9 +86,9 @@ public class DynamicStatusBar : Scenario
public class DynamicStatusBarDetails : FrameView
{
private Shortcut _statusItem;
private Shortcut? _statusItem;
public DynamicStatusBarDetails (Shortcut statusItem = null) : this ()
public DynamicStatusBarDetails (Shortcut? statusItem = null) : this ()
{
_statusItem = statusItem;
Title = statusItem == null ? "Adding New StatusBar Item." : "Editing StatusBar Item.";
@@ -98,52 +97,55 @@ public class DynamicStatusBar : Scenario
public DynamicStatusBarDetails ()
{
var lblTitle = new Label { Y = 1, Text = "Title:" };
base.Add (lblTitle);
Add (lblTitle);
TextTitle = new TextField { X = Pos.Right (lblTitle) + 4, Y = Pos.Top (lblTitle), Width = Dim.Fill () };
base.Add (TextTitle);
Add (TextTitle);
var lblAction = new Label { X = Pos.Left (lblTitle), Y = Pos.Bottom (lblTitle) + 1, Text = "Action:" };
base.Add (lblAction);
Add (lblAction);
TextAction = new TextView
{
X = Pos.Left (TextTitle), Y = Pos.Top (lblAction), Width = Dim.Fill (), Height = 5
};
base.Add (TextAction);
Add (TextAction);
var lblShortcut = new Label
var lblKey = new Label
{
X = Pos.Left (lblTitle), Y = Pos.Bottom (TextAction) + 1, Text = "Shortcut:"
X = Pos.Left (lblTitle), Y = Pos.Bottom (TextAction) + 1, Text = "Key:"
};
base.Add (lblShortcut);
Add (lblKey);
TextShortcut = new TextField
TextKey = new TextField
{
X = Pos.X (TextAction), Y = Pos.Y (lblShortcut), Width = Dim.Fill (), ReadOnly = true
X = Pos.X (TextAction), Y = Pos.Y (lblKey), Width = Dim.Fill (), ReadOnly = true
};
TextShortcut.KeyDown += (s, e) =>
TextKey.KeyDown += (_, e) =>
{
TextShortcut.Text = e.ToString ();
TextKey.Text = e.ToString ();
};
base.Add (TextShortcut);
Add (TextKey);
var btnShortcut = new Button
var btnKey = new Button
{
X = Pos.X (lblShortcut), Y = Pos.Bottom (TextShortcut) + 1, Text = "Clear Shortcut"
X = Pos.X (lblKey), Y = Pos.Bottom (TextKey) + 1, Text = "Clear Key"
};
btnShortcut.Accepting += (s, e) => { TextShortcut.Text = ""; };
base.Add (btnShortcut);
btnKey.Accepting += (_, e) =>
{
TextKey.Text = "";
e.Handled = true;
};
Add (btnKey);
}
public TextView TextAction { get; }
public TextField TextShortcut { get; }
public TextField TextKey { get; }
public TextField TextTitle { get; }
public Action CreateAction (DynamicStatusItem item) { return () => MessageBox.ErrorQuery (App!, item.Title, item.Action, "Ok"); }
public Action CreateAction (DynamicStatusItem item) => () => MessageBox.ErrorQuery (_app!, item.Title, item.Action, "Ok");
public void EditStatusItem (Shortcut statusItem)
public void EditStatusItem (Shortcut? statusItem)
{
if (statusItem == null)
{
@@ -155,16 +157,16 @@ public class DynamicStatusBar : Scenario
Enabled = true;
_statusItem = statusItem;
TextTitle.Text = statusItem?.Title ?? "";
TextTitle.Text = statusItem.Title;
TextAction.Text = statusItem != null && statusItem.Action != null
TextAction.Text = statusItem.Action != null
? GetTargetAction (statusItem.Action)
: string.Empty;
TextShortcut.Text = statusItem.Key;
TextKey.Text = statusItem.Key == Key.Empty ? "" : statusItem.Key;
}
public DynamicStatusItem EnterStatusItem ()
public DynamicStatusItem? EnterStatusItem ()
{
var valid = false;
@@ -181,41 +183,40 @@ public class DynamicStatusBar : Scenario
var btnOk = new Button { IsDefault = true, Text = "OK" };
Dialog dialog = new () { Title = "Enter the menu details." };
btnOk.Accepting += (s, e) =>
btnOk.Accepting += (_, _) =>
{
if (string.IsNullOrEmpty (TextTitle.Text))
{
MessageBox.ErrorQuery (App, "Invalid title", "Must enter a valid title!.", "Ok");
MessageBox.ErrorQuery (_app!, "Invalid title", "Must enter a valid title!.", "Ok");
}
else
{
valid = true;
dialog.App?.RequestStop ();
_app?.RequestStop ();
}
};
var btnCancel = new Button { Text = "Cancel" };
btnCancel.Accepting += (s, e) =>
btnCancel.Accepting += (_, _) =>
{
TextTitle.Text = string.Empty;
dialog.App?.RequestStop ();
_app?.RequestStop ();
};
dialog.Buttons = [btnOk, btnCancel];
Width = Dim.Fill (0, minimumContentDim: 50);
Height = Dim.Fill (0, minimumContentDim: 10) - 2;
Dialog dialog = new () { Title = "Enter the Shortcut details.", Buttons = [btnOk, btnCancel] };
Width = Dim.Auto ();
Height = Dim.Auto ();
dialog.Add (this);
TextTitle.SetFocus ();
TextTitle.InsertionPoint = TextTitle.Text.Length;
App?.Run (dialog);
_app?.Run (dialog);
dialog.Dispose ();
return valid
? new DynamicStatusItem
{
Title = TextTitle.Text, Action = TextAction.Text, Shortcut = TextShortcut.Text
Title = TextTitle.Text, Action = TextAction.Text, Key = TextKey.Text
}
: null;
}
@@ -224,12 +225,12 @@ public class DynamicStatusBar : Scenario
{
TextTitle.Text = "";
TextAction.Text = "";
TextShortcut.Text = "";
TextKey.Text = "";
}
private string GetTargetAction (Action action)
{
object me = action.Target;
object? me = action.Target;
if (me == null)
{
@@ -246,17 +247,16 @@ public class DynamicStatusBar : Scenario
}
}
return v == null || !(v is DynamicStatusItem item) ? string.Empty : item.Action;
return v is not DynamicStatusItem item ? string.Empty : item.Action;
}
}
public class DynamicStatusBarSample : Window
{
private readonly ListView _lstItems;
private Shortcut _currentEditStatusItem;
private Shortcut? _currentEditStatusItem;
private int _currentSelectedStatusBar = -1;
private Shortcut _currentStatusItem;
private StatusBar _statusBar;
private StatusBar? _statusBar;
public DynamicStatusBarSample ()
{
@@ -312,7 +312,7 @@ public class DynamicStatusBar : Scenario
};
Add (frmStatusBarDetails);
btnUp.Accepting += (s, e) =>
btnUp.Accepting += (_, _) =>
{
if (_lstItems.SelectedItem is null)
{
@@ -320,27 +320,31 @@ public class DynamicStatusBar : Scenario
}
int i = _lstItems.SelectedItem.Value;
Shortcut statusItem = DataContext.Items.Count > 0 ? DataContext.Items [i].Shortcut : null;
Shortcut? statusItem = DataContext.Items.Count > 0 ? DataContext.Items [i].Shortcut : null;
if (statusItem != null)
if (statusItem == null)
{
Shortcut [] items = _statusBar.SubViews.OfType<Shortcut> ().ToArray ();
if (i > 0)
{
items [i] = items [i - 1];
items [i - 1] = statusItem;
DataContext.Items [i] = DataContext.Items [i - 1];
DataContext.Items [i - 1] =
new DynamicStatusItemList (statusItem.Title, statusItem);
_lstItems.SelectedItem = i - 1;
_statusBar.SetNeedsDraw ();
}
return;
}
Shortcut [] items = _statusBar!.SubViews.OfType<Shortcut> ().ToArray ();
if (i <= 0)
{
return;
}
items [i] = items [i - 1];
items [i - 1] = statusItem;
DataContext.Items [i] = DataContext.Items [i - 1];
DataContext.Items [i - 1] =
new DynamicStatusItemList (statusItem.Title, statusItem);
_lstItems.SelectedItem = _currentSelectedStatusBar = i - 1;
Shortcut toMove = _statusBar.RemoveShortcut (i)!;
_statusBar.AddShortcutAt (i - 1, toMove);
_statusBar.SetNeedsLayout ();
};
btnDown.Accepting += (s, e) =>
btnDown.Accepting += (_, _) =>
{
if (_lstItems.SelectedItem is null)
{
@@ -348,24 +352,28 @@ public class DynamicStatusBar : Scenario
}
int i = _lstItems.SelectedItem.Value;
Shortcut statusItem = DataContext.Items.Count > 0 ? DataContext.Items [i].Shortcut : null;
Shortcut? statusItem = DataContext.Items.Count > 0 ? DataContext.Items [i].Shortcut : null;
if (statusItem != null)
if (statusItem == null)
{
Shortcut [] items = _statusBar.SubViews.OfType<Shortcut> ().ToArray ();
if (i < items.Length - 1)
{
items [i] = items [i + 1];
items [i + 1] = statusItem;
DataContext.Items [i] = DataContext.Items [i + 1];
DataContext.Items [i + 1] =
new DynamicStatusItemList (statusItem.Title, statusItem);
_lstItems.SelectedItem = i + 1;
_statusBar.SetNeedsDraw ();
}
return;
}
Shortcut [] items = _statusBar!.SubViews.OfType<Shortcut> ().ToArray ();
if (i >= items.Length - 1)
{
return;
}
items [i] = items [i + 1];
items [i + 1] = statusItem;
DataContext.Items [i] = DataContext.Items [i + 1];
DataContext.Items [i + 1] =
new DynamicStatusItemList (statusItem.Title, statusItem);
_lstItems.SelectedItem = _currentSelectedStatusBar = i + 1;
Shortcut toMove = _statusBar.RemoveShortcut (i)!;
_statusBar.AddShortcutAt (i + 1, toMove);
_statusBar.SetNeedsLayout ();
};
var btnOk = new Button
@@ -375,16 +383,20 @@ public class DynamicStatusBar : Scenario
Add (btnOk);
var btnCancel = new Button { X = Pos.Right (btnOk) + 3, Y = Pos.Top (btnOk), Text = "Cancel" };
btnCancel.Accepting += (s, e) => { SetFrameDetails (_currentEditStatusItem); };
btnCancel.Accepting += (_, _) => { SetFrameDetails (_currentEditStatusItem); };
Add (btnCancel);
_lstItems.ValueChanged += (_, _) => { SetFrameDetails (); };
_lstItems.ValueChanged += (_, e) =>
{
_currentSelectedStatusBar = e.NewValue ?? -1;
SetFrameDetails ();
};
btnOk.Accepting += (s, e) =>
btnOk.Accepting += (_, _) =>
{
if (string.IsNullOrEmpty (frmStatusBarDetails.TextTitle.Text) && _currentEditStatusItem != null)
{
MessageBox.ErrorQuery (App, "Invalid title", "Must enter a valid title!.", "Ok");
MessageBox.ErrorQuery (_app!, "Invalid title", "Must enter a valid title!.", "Ok");
}
else if (_currentEditStatusItem != null)
{
@@ -392,7 +404,7 @@ public class DynamicStatusBar : Scenario
{
Title = frmStatusBarDetails.TextTitle.Text,
Action = frmStatusBarDetails.TextAction.Text,
Shortcut = frmStatusBarDetails.TextShortcut.Text
Key = frmStatusBarDetails.TextKey.Text
};
if (_lstItems.SelectedItem is { } selectedItem)
@@ -402,22 +414,21 @@ public class DynamicStatusBar : Scenario
}
};
btnAdd.Accepting += (s, e) =>
btnAdd.Accepting += (_, _) =>
{
//if (StatusBar == null)
//{
// MessageBox.ErrorQuery (
// "StatusBar Bar Error",
// "Must add a StatusBar first!",
// "Ok"
// );
// _btnAddStatusBar.SetFocus ();
if (_statusBar == null)
{
MessageBox.ErrorQuery (_app!,
"StatusBar Bar Error",
"Must add a StatusBar first!",
"Ok");
btnAddStatusBar.SetFocus ();
// return;
//}
return;
}
var frameDetails = new DynamicStatusBarDetails ();
DynamicStatusItem item = frameDetails.EnterStatusItem ();
DynamicStatusItem? item = frameDetails.EnterStatusItem ();
if (item == null)
{
@@ -432,37 +443,38 @@ public class DynamicStatusBar : Scenario
SetFrameDetails ();
};
btnRemove.Accepting += (s, e) =>
btnRemove.Accepting += (_, _) =>
{
Shortcut statusItem = DataContext.Items.Count > 0
? DataContext.Items [_lstItems.SelectedItem.Value].Shortcut
Shortcut? statusItem = DataContext.Items.Count > 0
? DataContext.Items [_lstItems.SelectedItem!.Value].Shortcut
: null;
if (statusItem != null)
if (statusItem == null)
{
_statusBar.RemoveShortcut (_currentSelectedStatusBar);
statusItem.Dispose ();
DataContext.Items.RemoveAt (_lstItems.SelectedItem.Value);
if (_lstItems.Source.Count > 0 && _lstItems.SelectedItem > _lstItems.Source.Count - 1)
{
_lstItems.SelectedItem = _lstItems.Source.Count - 1;
}
_lstItems.SetNeedsDraw ();
SetFrameDetails ();
return;
}
Shortcut? removed = _statusBar?.RemoveShortcut (_currentSelectedStatusBar);
removed?.Dispose ();
DataContext.Items.RemoveAt (_lstItems.SelectedItem!.Value);
if (_lstItems.Source.Count > 0 && _lstItems.SelectedItem > _lstItems.Source.Count - 1)
{
_lstItems.SelectedItem = _lstItems.Source.Count - 1;
}
_currentSelectedStatusBar = _lstItems.SelectedItem ?? -1;
_lstItems.SetNeedsDraw ();
SetFrameDetails ();
};
_lstItems.HasFocusChanging += (s, e) =>
_lstItems.HasFocusChanging += (_, _) =>
{
Shortcut statusItem = DataContext.Items.Count > 0
? DataContext.Items [_lstItems.SelectedItem.Value].Shortcut
: null;
Shortcut? statusItem = DataContext.Items.Count > 0
? DataContext.Items [_lstItems.SelectedItem!.Value].Shortcut
: null;
SetFrameDetails (statusItem);
};
btnAddStatusBar.Accepting += (s, e) =>
btnAddStatusBar.Accepting += (_, _) =>
{
if (_statusBar != null)
{
@@ -473,7 +485,7 @@ public class DynamicStatusBar : Scenario
Add (_statusBar);
};
btnRemoveStatusBar.Accepting += (s, e) =>
btnRemoveStatusBar.Accepting += (_, _) =>
{
if (_statusBar == null)
{
@@ -484,27 +496,26 @@ public class DynamicStatusBar : Scenario
_statusBar.Dispose ();
_statusBar = null;
DataContext.Items = [];
_currentStatusItem = null;
Shortcut? currentStatusItem1 = null;
_currentSelectedStatusBar = -1;
SetListViewSource (_currentStatusItem, true);
SetListViewSource (currentStatusItem1, true);
SetFrameDetails ();
};
SetFrameDetails ();
var ustringConverter = new UStringValueConverter ();
var listWrapperConverter = new ListWrapperConverter<DynamicStatusItemList> ();
_ = new Binding (this, "Items", _lstItems, "Source", new ListWrapperConverter<DynamicStatusItemList> ());
var lstItems = new Binding (this, "Items", _lstItems, "Source", listWrapperConverter);
return;
void SetFrameDetails (Shortcut statusItem = null)
void SetFrameDetails (Shortcut? statusItem = null)
{
Shortcut newStatusItem;
Shortcut? newStatusItem;
if (statusItem == null)
{
newStatusItem = DataContext.Items.Count > 0
? DataContext.Items [_lstItems.SelectedItem.Value].Shortcut
? DataContext.Items [_lstItems.SelectedItem!.Value].Shortcut
: null;
}
else
@@ -516,35 +527,37 @@ public class DynamicStatusBar : Scenario
frmStatusBarDetails.EditStatusItem (newStatusItem);
bool f = btnOk.Enabled == frmStatusBarDetails.Enabled;
if (!f)
if (f)
{
btnOk.Enabled = frmStatusBarDetails.Enabled;
btnCancel.Enabled = frmStatusBarDetails.Enabled;
return;
}
btnOk.Enabled = frmStatusBarDetails.Enabled;
btnCancel.Enabled = frmStatusBarDetails.Enabled;
}
void SetListViewSource (Shortcut currentStatusItem, bool fill = false)
void SetListViewSource (Shortcut? currentStatusItem, bool fill = false)
{
DataContext.Items = [];
Shortcut statusItem = currentStatusItem;
if (!fill)
{
return;
}
if (statusItem != null)
if (currentStatusItem == null)
{
foreach (Shortcut si in _statusBar.SubViews.OfType<Shortcut> ())
{
DataContext.Items.Add (new DynamicStatusItemList (si.Title, si));
}
return;
}
foreach (Shortcut si in _statusBar?.SubViews.OfType<Shortcut> ()!)
{
DataContext.Items.Add (new DynamicStatusItemList (si.Title, si));
}
}
Shortcut CreateNewStatusBar (DynamicStatusItem item)
{
var newStatusItem = new Shortcut (item.Shortcut, item.Title, frmStatusBarDetails.CreateAction (item));
var newStatusItem = new Shortcut (item.Key, item.Title, frmStatusBarDetails.CreateAction (item));
return newStatusItem;
}
@@ -555,24 +568,18 @@ public class DynamicStatusBar : Scenario
int index
)
{
_statusBar.SubViews.ElementAt (index).Title = statusItem.Title;
((Shortcut)_statusBar.SubViews.ElementAt (index)).Action = frmStatusBarDetails.CreateAction (statusItem);
((Shortcut)_statusBar.SubViews.ElementAt (index)).Key = statusItem.Shortcut;
_statusBar?.SubViews.ElementAt (index).Title = statusItem.Title;
((Shortcut)_statusBar?.SubViews.ElementAt (index)!).Action = frmStatusBarDetails.CreateAction (statusItem);
((Shortcut)_statusBar.SubViews.ElementAt (index)).Key = statusItem.Key;
if (DataContext.Items.Count == 0)
{
DataContext.Items.Add (
new DynamicStatusItemList (
currentEditStatusItem.Title,
currentEditStatusItem
)
);
DataContext.Items.Add (new DynamicStatusItemList (currentEditStatusItem.Title,
currentEditStatusItem));
}
DataContext.Items [index] = new DynamicStatusItemList (
currentEditStatusItem.Title,
currentEditStatusItem
);
DataContext.Items [index] = new DynamicStatusItemList (currentEditStatusItem.Title,
currentEditStatusItem);
SetFrameDetails (currentEditStatusItem);
}
@@ -580,95 +587,59 @@ public class DynamicStatusBar : Scenario
}
public DynamicStatusItemModel DataContext { get; set; }
}
public class DynamicStatusItem
{
public string Action { get; set; } = "";
public string Shortcut { get; set; }
public string Action { get; set; } = string.Empty;
public string Key { get; set; } = string.Empty;
public string Title { get; set; } = "New";
}
public class DynamicStatusItemList
public class DynamicStatusItemList (string title, Shortcut statusItem)
{
public DynamicStatusItemList () { }
public DynamicStatusItemList (string title, Shortcut statusItem)
{
Title = title;
Shortcut = statusItem;
}
public Shortcut Shortcut { get; set; }
public string Title { get; set; }
public override string ToString () { return $"{Title}, {Shortcut.Key}"; }
public Shortcut Shortcut { get; set; } = statusItem;
public string Title { get; set; } = title;
public override string ToString () => $"{Title}, {Shortcut.Key}";
}
public class DynamicStatusItemModel : INotifyPropertyChanged
{
private ObservableCollection<DynamicStatusItemList> _items;
private string _statusBar;
public DynamicStatusItemModel () { Items = []; }
public DynamicStatusItemModel () => Items = [];
public ObservableCollection<DynamicStatusItemList> Items
{
get => _items;
get;
set
{
if (value == _items)
if (value == field)
{
return;
}
_items = value;
field = value;
PropertyChanged?.Invoke (
this,
new PropertyChangedEventArgs (GetPropertyName ())
);
PropertyChanged?.Invoke (this, new PropertyChangedEventArgs (GetPropertyName ()));
}
}
public string StatusBar
{
get => _statusBar;
set
{
if (value == _statusBar)
{
return;
}
_statusBar = value;
PropertyChanged?.Invoke (
this,
new PropertyChangedEventArgs (GetPropertyName ())
);
}
}
public event PropertyChangedEventHandler PropertyChanged;
public string GetPropertyName ([CallerMemberName] string propertyName = null) { return propertyName; }
public event PropertyChangedEventHandler? PropertyChanged;
public string? GetPropertyName ([CallerMemberName] string? propertyName = null) => propertyName;
}
public interface IValueConverter
{
object Convert (object value, object parameter = null);
object Convert (object value, object? parameter = null);
}
public class ListWrapperConverter<T> : IValueConverter
{
public object Convert (object value, object parameter = null) { return new ListWrapper<T> ((ObservableCollection<T>)value); }
public object Convert (object value, object? parameter = null) => new ListWrapper<T> ((ObservableCollection<T>)value);
}
public class UStringValueConverter : IValueConverter
{
public object Convert (object value, object parameter = null)
public object Convert (object value, object? parameter = null)
{
byte [] data = Encoding.ASCII.GetBytes (value.ToString () ?? string.Empty);