private static void Invert(object sender, ConvertEventArgs e)
{
if (e.DesiredType == typeof(bool))
{
e.Value = !((bool)e.Value);
}
}
private static void OnKeyModifierBindingConvert(object sender, ConvertEventArgs e)
{
if (e.Value is XKeys && e.DesiredType == typeof (ModifierFlags))
{
ModifierFlags result = ModifierFlags.None;
XKeys value = (XKeys) e.Value;
if ((value & XKeys.Control) == XKeys.Control)
result = result | ModifierFlags.Control;
if ((value & XKeys.Alt) == XKeys.Alt)
result = result | ModifierFlags.Alt;
if ((value & XKeys.Shift) == XKeys.Shift)
result = result | ModifierFlags.Shift;
e.Value = result;
}
else if (e.Value is ModifierFlags && e.DesiredType == typeof (XKeys))
{
XKeys result = XKeys.None;
ModifierFlags value = (ModifierFlags) e.Value;
if ((value & ModifierFlags.Control) == ModifierFlags.Control)
result = result | XKeys.Control;
if ((value & ModifierFlags.Alt) == ModifierFlags.Alt)
result = result | XKeys.Alt;
if ((value & ModifierFlags.Shift) == ModifierFlags.Shift)
result = result | XKeys.Shift;
e.Value = result;
}
}
private void OnFormatQuality(object sender, ConvertEventArgs e)
{
if (e.DesiredType != typeof(string))
return;
e.Value = String.Format("({0})", (int)e.Value);
}
void CheckBoxNeverEnd_Format(object sender, ConvertEventArgs e)
{
// from object to control
// Never Ending should be checked when there is no end date
if (e.DesiredType == typeof(bool))
e.Value = (e.Value == null);
}
public static void DecimalToFloatString(object sender, ConvertEventArgs cevent)
{
// The method converts only to string type. Test this using the DesiredType.
if (cevent.DesiredType != typeof(string)) return;
if(!string.IsNullOrEmpty(cevent.Value.ToString()))
cevent.Value = ((decimal)cevent.Value).ToString("###,###,###.00");
}
private void DecimalToCurrencyString(object sender, ConvertEventArgs e)
{
if (e.DesiredType == typeof(string))
{
// Use the ToString method to format the value as currency ("c").
e.Value = ((decimal)e.Value).ToString("c");
}
}
private void ImageToFile(object sender, ConvertEventArgs e)
{
if (e.DesiredType == typeof(string))
{
// Substitute the filename.
e.Value = picProduct.Tag;
}
}
public static void CurrencyFormat(object sender, ConvertEventArgs e)
{
if (e.Value is System.DBNull)
{
return;
}
e.Value = (Convert.ToDouble(e.Value)).ToString("C");
}
public static void DateFormat(object sender, ConvertEventArgs e)
{
if (e.Value is System.DBNull)
{
return;
}
e.Value = Convert.ToDateTime(e.Value).ToShortDateString();
}
public static void CurrencyStringToDecimal(object sender, ConvertEventArgs cevent)
{
// The method converts back to decimal type only.
if (cevent.DesiredType != typeof(decimal)) return;
if (!string.IsNullOrEmpty(cevent.Value.ToString()))
// Converts the string back to decimal using the static Parse method.
cevent.Value = Decimal.Parse(cevent.Value.ToString(),
NumberStyles.Currency, null);
}
public static void DecimalToCurrencyString(object sender, ConvertEventArgs cevent)
{
// The method converts only to string type. Test this using the DesiredType.
if (cevent.DesiredType != typeof(string)) return;
// Use the ToString method to format the value as currency ("c").
if (!string.IsNullOrEmpty(cevent.Value.ToString()))
cevent.Value = ((decimal)cevent.Value).ToString("c");
}
public static void FloatStringToDecimal(object sender, ConvertEventArgs cevent)
{
// The method converts back to decimal type only.
if (cevent.DesiredType != typeof(decimal)) return;
// Converts the string back to decimal using the static Parse method.
cevent.Value = Decimal.Parse(cevent.Value.ToString(),
NumberStyles.Any, null);
}
protected override void OnFormat(ConvertEventArgs cevent)
{
if (this._converter != null)
{
var converterdValue = this._converter.Convert(cevent.Value, cevent.DesiredType, _converterParameter,
_converterCulture);
cevent.Value = converterdValue;
}
else base.OnFormat(cevent);
}
void OnPortBindingFormat(object sender, ConvertEventArgs e)
{
if (e.DesiredType != typeof(string))
return;
if ((int)e.Value <= 0)
e.Value = "";
else
e.Value = e.Value.ToString();
}
void IsShredHostRunningFormat(object sender, ConvertEventArgs e)
{
// The method converts only to string type. Test this using the DesiredType.
if (e.DesiredType != typeof(string)) return;
// Use the ToString method to format the value as currency ("c").
if (true == ((bool)e.Value))
e.Value = (string)"ShredHost is Running";
else
e.Value = (string)"ShredHost is Stopped";
}
public static void PercentFormat(object sender, ConvertEventArgs e)
{
if (e.Value is System.DBNull)
{
return;
}
double percentValue = Convert.ToDouble(e.Value);
percentValue = percentValue / 100;
e.Value = percentValue.ToString("P0");
}
void CheckBoxNeverEnd_Parse(object sender, ConvertEventArgs e)
{
// from control to object
if (e.DesiredType == typeof(DateTime?) && e.Value is bool)
{
//e.Value = ((bool)e.Value == true ? (DateTime?)null : DateTime.Today);
if ((bool)e.Value == true)
e.Value = null;
//else
// e.Value = ((Schedule)((BindingSource)((Binding)sender).DataSource).Current).EndDate;
}
}
void EndDate_Format(object sender, ConvertEventArgs e)
{
// from object to control
DateTime? val = e.Value as DateTime?;
// if desired type is DateTime then we're binding Value
// if desired type is Boolean then we're binding Enabled
if (e.DesiredType == typeof(DateTime))
e.Value = (val.HasValue ? e.Value : dtpEndDate.Value);
else if (e.DesiredType == typeof(bool))
e.Value = val.HasValue;
}
void OnRadioBindingParse(object sender, ConvertEventArgs e)
{
if (e.DesiredType != typeof(DateFormatApplicationComponent.DateFormatOptions))
return;
if (_radioCustom.Checked)
e.Value = DateFormatApplicationComponent.DateFormatOptions.Custom;
else if (_radioSystemLongDate.Checked)
e.Value = DateFormatApplicationComponent.DateFormatOptions.SystemLong;
else
e.Value = DateFormatApplicationComponent.DateFormatOptions.SystemShort;
}
private object FormatObject(object value)
{
if (this.ControlAtDesignTime())
{
return(value);
}
System.Type propertyType = this.propInfo.PropertyType;
if (this.formattingEnabled)
{
ConvertEventArgs args = new ConvertEventArgs(value, propertyType);
this.OnFormat(args);
if (args.Value != value)
{
return(args.Value);
}
TypeConverter sourceConverter = null;
if (this.bindToObject.FieldInfo != null)
{
sourceConverter = this.bindToObject.FieldInfo.Converter;
}
return(Formatter.FormatObject(value, propertyType, sourceConverter, this.propInfoConverter, this.formatString, this.formatInfo, this.nullValue, this.dsNullValue));
}
ConvertEventArgs cevent = new ConvertEventArgs(value, propertyType);
this.OnFormat(cevent);
object obj2 = cevent.Value;
if (propertyType == typeof(object))
{
return(value);
}
if ((obj2 != null) && (obj2.GetType().IsSubclassOf(propertyType) || (obj2.GetType() == propertyType)))
{
return(obj2);
}
TypeConverter converter2 = TypeDescriptor.GetConverter((value != null) ? value.GetType() : typeof(object));
if ((converter2 != null) && converter2.CanConvertTo(propertyType))
{
return(converter2.ConvertTo(value, propertyType));
}
if (value is IConvertible)
{
obj2 = Convert.ChangeType(value, propertyType, CultureInfo.CurrentCulture);
if ((obj2 != null) && (obj2.GetType().IsSubclassOf(propertyType) || (obj2.GetType() == propertyType)))
{
return(obj2);
}
}
throw new FormatException(System.Windows.Forms.SR.GetString("ListBindingFormatFailed"));
}
void OnFormat(object sender, ConvertEventArgs e)
{
if (_keyProperty > 0)
{
_errorProvider.SetError(_comboBox, "");
return;
}
if (string.IsNullOrEmpty(_comboBox.Text))
{
e.Value = "";
_errorProvider.SetError(_comboBox, string.Format("{0} required.", _friendlyName));
}
}
/// <include file='doc\ListBinding.uex' path='docs/doc[@for="Binding.OnFormat"]/*' />
protected virtual void OnFormat(ConvertEventArgs cevent)
{
if (onFormat != null)
{
onFormat(this, cevent);
}
if (!formattingEnabled)
{
if (!(cevent.Value is System.DBNull) && cevent.DesiredType != null && !cevent.DesiredType.IsInstanceOfType(cevent.Value) && (cevent.Value is IConvertible))
{
cevent.Value = Convert.ChangeType(cevent.Value, cevent.DesiredType, CultureInfo.CurrentCulture);
}
}
}
private void CurrencyStringToDecimal(object sender, ConvertEventArgs e)
{
if (e.DesiredType == typeof(decimal))
{
// Convert the string back to decimal using the static Parse method.
try
{
e.Value = Decimal.Parse(e.Value.ToString());
}
catch
{
e.Value = previousUnitCost;
}
}
}
void OnPortBindingParse(object sender, ConvertEventArgs e)
{
if (e.DesiredType != typeof(int))
return;
int value;
if (!(e.Value is string) || !int.TryParse((string)e.Value, out value))
{
e.Value = 0;
}
else
{
e.Value = value;
}
}
// will throw when fail
// we will not format the object when the control is in design time.
// this is because if we bind a boolean property on a control
// to a row that is full of DBNulls then we cause problems in the shell.
private object FormatObject(object value)
{
if (ControlAtDesignTime())
{
return(value);
}
object ret;
Type type = propInfo.PropertyType;
if (type == typeof(object))
{
return(value);
}
// first try: use the Format event
ConvertEventArgs e = new ConvertEventArgs(value, type);
OnFormat(e);
ret = e.Value;
if (ret.GetType().IsSubclassOf(type) || ret.GetType() == type)
{
return(ret);
}
// second try: use type converter for the desiredType
TypeConverter typeConverter = TypeDescriptor.GetConverter(value.GetType());
if (typeConverter != null && typeConverter.CanConvertTo(type))
{
ret = typeConverter.ConvertTo(value, type);
return(ret);
}
// last try: use Convert.ChangeType
if (value is IConvertible)
{
ret = Convert.ChangeType(value, type);
if (ret.GetType().IsSubclassOf(type) || ret.GetType() == type)
{
return(ret);
}
}
// time to fail:
throw new FormatException(SR.GetString(SR.ListBindingFormatFailed));
}
private void CurrencyStringToDecimal(object sender, ConvertEventArgs e)
{
if (e.DesiredType == typeof(decimal))
{
// Convert the string back to decimal using the static Parse method.
try
{
previousValue = e.Value;
e.Value = Decimal.Parse(e.Value.ToString(),
System.Globalization.NumberStyles.Currency, null);
}
catch
{
e.Value = previousValue;
}
}
}
private object ParseObject(object value)
{
System.Type bindToType = this.bindToObject.BindToType;
if (this.formattingEnabled)
{
ConvertEventArgs args = new ConvertEventArgs(value, bindToType);
this.OnParse(args);
object objB = args.Value;
if (!object.Equals(value, objB))
{
return(objB);
}
TypeConverter targetConverter = null;
if (this.bindToObject.FieldInfo != null)
{
targetConverter = this.bindToObject.FieldInfo.Converter;
}
return(Formatter.ParseObject(value, bindToType, (value == null) ? this.propInfo.PropertyType : value.GetType(), targetConverter, this.propInfoConverter, this.formatInfo, this.nullValue, this.GetDataSourceNullValue(bindToType)));
}
ConvertEventArgs cevent = new ConvertEventArgs(value, bindToType);
this.OnParse(cevent);
if ((cevent.Value != null) && ((cevent.Value.GetType().IsSubclassOf(bindToType) || (cevent.Value.GetType() == bindToType)) || (cevent.Value is DBNull)))
{
return(cevent.Value);
}
TypeConverter converter2 = TypeDescriptor.GetConverter((value != null) ? value.GetType() : typeof(object));
if ((converter2 != null) && converter2.CanConvertTo(bindToType))
{
return(converter2.ConvertTo(value, bindToType));
}
if (value is IConvertible)
{
object obj3 = Convert.ChangeType(value, bindToType, CultureInfo.CurrentCulture);
if ((obj3 != null) && (obj3.GetType().IsSubclassOf(bindToType) || (obj3.GetType() == bindToType)))
{
return(obj3);
}
}
return(null);
}
private object ParseData(object data, Type data_type)
{
ConvertEventArgs e = new ConvertEventArgs(data, data_type);
OnParse(e);
if (data_type.IsInstanceOfType(e.Value))
{
return(e.Value);
}
if (e.Value == Convert.DBNull)
{
return(e.Value);
}
if (e.Value == null)
{
bool nullable = data_type.IsGenericType && !data_type.ContainsGenericParameters &&
data_type.GetGenericTypeDefinition() == typeof(Nullable <>);
return(data_type.IsValueType && !nullable ? Convert.DBNull : null);
}
return(ConvertData(e.Value, data_type));
}
private void FileToImage(object sender, ConvertEventArgs e)
{
if (e.DesiredType == typeof(Image))
{
// Store the filename.
picProduct.Tag = e.Value;
// Look up the corresponding file, and create an Image object.
try
{
lblStatus.Text = "Retrieved picture " + e.Value;
e.Value = Image.FromFile(Application.StartupPath + "\\" + e.Value);
}
catch (Exception err)
{
lblStatus.Text = "Could not find picture " + e.Value;
// You could return an error picture here.
// This code uses a blank 1x1 pixel image.
e.Value = new Bitmap(1,1);
}
}
}
private void DateFormat(object sender, System.Windows.Forms.ConvertEventArgs e)
{
if (e.DesiredType != typeof(string))
{
return;
}
try
{
if (e.Value == null)
{
e.Value = String.Empty;
}
else
{
e.Value = Convert.ToDateTime(e.Value).ToShortDateString();
}
}
catch (Exception)
{
e.Value = String.Empty;
}
}
void OnParse(object sender, ConvertEventArgs e)
{
if (_nameValueList.Key(_comboBox.Text) > 0)
{
_errorProvider.SetError(_comboBox, "");
return;
}
if (_nameValueList.Key(e.Value.ToString()) > 0)
{
_comboBox.Text = e.Value.ToString();
_errorProvider.SetError(_comboBox, "");
return;
}
_keyProperty = 0;
if (string.IsNullOrEmpty(_comboBox.Text))
{
_errorProvider.SetError(_comboBox, string.Format("{0} required.",_friendlyName));
}
else
_errorProvider.SetError(_comboBox, string.Format("{0} isn't a valid {1}.", e.Value, _friendlyName));
}
private void OnParse(object sender, ConvertEventArgs e)
{
}
//=====================================================================
/// <summary>
/// This converts null values to a default type for the bound radio button list
/// </summary>
/// <param name="sender">The sender of the event</param>
/// <param name="e">The event arguments</param>
private void ContactType_Format(object sender, ConvertEventArgs e)
{
if(e.Value == null || e.Value == DBNull.Value)
e.Value = "B";
}
private object FormatObject(object value)
{
// We will not format the object when the control is in design time.
// This is because if we bind a boolean property on a control to a
// row that is full of DBNulls then we cause problems in the shell.
if (ControlAtDesignTime())
{
return(value);
}
Type type = propInfo.PropertyType;
if (formattingEnabled)
{
// -------------------------------
// Behavior for Whidbey and beyond
// -------------------------------
// Fire the Format event so that user code gets a chance to supply the formatted value for us
ConvertEventArgs e = new ConvertEventArgs(value, type);
OnFormat(e);
if (e.Value != value)
{
// If event handler replaced parsed value with formatted value, use that
return(e.Value);
}
else
{
// Otherwise format the parsed value ourselves
TypeConverter fieldInfoConverter = null;
if (bindToObject.FieldInfo != null)
{
fieldInfoConverter = bindToObject.FieldInfo.Converter;
}
return(Formatter.FormatObject(value, type, fieldInfoConverter, propInfoConverter, formatString, formatInfo, nullValue, dsNullValue));
}
}
else
{
// ----------------------------
// Behavior for RTM and Everett [DO NOT MODIFY!]
// ----------------------------
// first try: use the Format event
ConvertEventArgs e = new ConvertEventArgs(value, type);
OnFormat(e);
object ret = e.Value;
// Approved breaking-change behavior between RTM and Everett: Fire the Format event even if the control property is of type
// Object (RTM used to skip the event for properties of this type).
if (type == typeof(object))
{
return(value);
}
// stop now if we have a value of a compatible type
if (ret != null && (ret.GetType().IsSubclassOf(type) || ret.GetType() == type))
{
return(ret);
}
// second try: use type converter for the desiredType
TypeConverter typeConverter = TypeDescriptor.GetConverter(value != null ? value.GetType() : typeof(object));
if (typeConverter != null && typeConverter.CanConvertTo(type))
{
ret = typeConverter.ConvertTo(value, type);
return(ret);
}
// last try: use Convert.ChangeType
if (value is IConvertible)
{
ret = Convert.ChangeType(value, type, CultureInfo.CurrentCulture);
if (ret != null && (ret.GetType().IsSubclassOf(type) || ret.GetType() == type))
{
return(ret);
}
}
// time to fail:
throw new FormatException(SR.ListBindingFormatFailed);
}
}
private object ParseObject(object value)
{
Type type = this.bindToObject.BindToType;
if (formattingEnabled)
{
// -------------------------------
// Behavior for Whidbey and beyond
// -------------------------------
// Fire the Parse event so that user code gets a chance to supply the parsed value for us
ConvertEventArgs e = new ConvertEventArgs(value, type);
OnParse(e);
object newValue = e.Value;
if (!object.Equals(value, newValue))
{
// If event handler replaced formatted value with parsed value, use that
return(newValue);
}
else
{
// Otherwise parse the formatted value ourselves
TypeConverter fieldInfoConverter = null;
if (bindToObject.FieldInfo != null)
{
fieldInfoConverter = bindToObject.FieldInfo.Converter;
}
return(Formatter.ParseObject(value, type, (value == null ? propInfo.PropertyType : value.GetType()), fieldInfoConverter, propInfoConverter, formatInfo, nullValue, GetDataSourceNullValue(type)));
}
}
else
{
// ----------------------------
// Behavior for RTM and Everett [DO NOT MODIFY!]
// ----------------------------
ConvertEventArgs e = new ConvertEventArgs(value, type);
// first try: use the OnParse event
OnParse(e);
//
if (e.Value != null && (e.Value.GetType().IsSubclassOf(type) || e.Value.GetType() == type || e.Value is System.DBNull))
{
return(e.Value);
}
// second try: use the TypeConverter
TypeConverter typeConverter = TypeDescriptor.GetConverter(value != null ? value.GetType() : typeof(object));
if (typeConverter != null && typeConverter.CanConvertTo(type))
{
return(typeConverter.ConvertTo(value, type));
}
// last try: use Convert.ToType
if (value is IConvertible)
{
object ret = Convert.ChangeType(value, type, CultureInfo.CurrentCulture);
if (ret != null && (ret.GetType().IsSubclassOf(type) || ret.GetType() == type))
{
return(ret);
}
}
// time to fail: (RTM/Everett just returns null, whereas Whidbey throws an exception)
return(null);
}
}
protected override void OnParse(ConvertEventArgs cevent)
{
cevent.Value = Converter.ConvertBack(cevent.Value, cevent.DesiredType, ConvertParameter, Culture);
}
//=====================================================================
/// <summary>
/// This is used to set the checked state of an e-mail type checkbox
/// </summary>
/// <param name="sender">The sender of the event</param>
/// <param name="e">The event arguments</param>
private void CheckBox_Format(object sender, ConvertEventArgs e)
{
CheckBox cb = (CheckBox)((Binding)sender).Control;
EMailTypes checkType = (EMailTypes)cb.Tag;
EMailTypes emailTypes = (EMailTypes)e.Value;
e.Value = (emailTypes & checkType) == checkType;
}
private void SwitchBool(object sender, ConvertEventArgs e)
{
if (e.Value == null)
e.Value = false;
else
e.Value = (bool)e.Value;
}
protected override void OnParse(ConvertEventArgs cevent)
{
var values = Converter.ConvertBack(cevent.Value, _types, ConvertParameter, Culture);
cevent.Value = values;
}
/// <summary>
/// This is used to store the value of the e-mail type checkbox
/// </summary>
/// <param name="sender">The sender of the event</param>
/// <param name="e">The event arguments</param>
private void CheckBox_Parse(object sender, ConvertEventArgs e)
{
EMailProperty email = (EMailProperty)this.BindingSource.Current;
CheckBox cb = (CheckBox)((Binding)sender).Control;
EMailTypes checkType = (EMailTypes)cb.Tag;
if(cb.Checked)
email.EMailTypes |= checkType;
else
email.EMailTypes &= ~checkType;
// Only one address can be the preferred address
if(checkType == EMailTypes.Preferred)
((EMailPropertyCollection)this.BindingSource.DataSource).SetPreferred(email);
}
private void OnFormat(object sender, ConvertEventArgs e)
{
}
// EVENT HANDLERS
private void SpeedBinding_Format(object sender, ConvertEventArgs e)
{
int speed = (int)e.Value;
e.Value = $"{speed} steps/sec";
}
protected override void OnFormat(ConvertEventArgs cevent)
{
var values = (object[])cevent.Value;
cevent.Value = Converter.Convert(values, cevent.DesiredType, ConvertParameter, Culture);
}
