|
public static TryParse ( string value, string format, System.DateTime currentDate, |
||
| value | string | |
| format | string | |
| currentDate | System.DateTime | |
| cultureInfo | ||
| result | System.DateTime | |
| return | bool | |
private bool TryParseDateTime(string text, out DateTime result)
{
bool isValid = false;
result = this.ContextNow;
DateTime current = this.ContextNow;
try
{
current = (this.Value.HasValue)
? this.Value.Value
: DateTime.Parse(this.ContextNow.ToString(), this.CultureInfo.DateTimeFormat);
isValid = DateTimeParser.TryParse(text, this.GetFormatString(Format), current, this.CultureInfo, out result);
}
catch (FormatException)
{
isValid = false;
}
if (!isValid)
{
isValid = DateTime.TryParseExact(text, this.GetFormatString(this.Format), this.CultureInfo, DateTimeStyles.None, out result);
}
if (!isValid)
{
result = (_lastValidDate != null) ? _lastValidDate.Value : current;
}
return(isValid);
}
private bool TryParseDateTime(string text, out DateTime result)
{
bool isValid = false;
result = this.ContextNow;
DateTime current = this.ContextNow;
try
{
// TempValue is used when Manipulating TextBox.Text while Value is not updated yet (used in DateTimePicker's TimePicker).
current = this.TempValue.HasValue
? this.TempValue.Value
: this.Value.HasValue ? this.Value.Value : DateTime.Parse(this.ContextNow.ToString(), this.CultureInfo.DateTimeFormat);
isValid = DateTimeParser.TryParse(text, this.GetFormatString(Format), current, this.CultureInfo, this.AutoClipTimeParts, out result);
}
catch (FormatException)
{
isValid = false;
}
if (!isValid)
{
isValid = DateTime.TryParseExact(text, this.GetFormatString(this.Format), this.CultureInfo, DateTimeStyles.None, out result);
}
if (!isValid)
{
result = (_lastValidDate != null) ? _lastValidDate.Value : current;
}
return(isValid);
}
protected override DateTime?ConvertTextToValue(string text)
{
if (string.IsNullOrEmpty(text))
{
return(null);
}
DateTime current = Value.HasValue ? Value.Value : DateTime.Parse(DateTime.Now.ToString(), CultureInfo.DateTimeFormat);
DateTime result;
var success = DateTimeParser.TryParse(text, GetFormatString(Format), current, CultureInfo, out result);
return(result);
}
private bool TryParseDateTime(string text, out DateTime result)
{
bool isValid;
DateTime current = this.Value.HasValue ? this.Value.Value : DateTime.Parse(DateTime.Now.ToString(), this.CultureInfo.DateTimeFormat);
isValid = DateTimeParser.TryParse(text, this.GetFormatString(Format), current, this.CultureInfo, out result);
if (!isValid && (this.Format == DateTimeFormat.Custom))
{
isValid = DateTime.TryParseExact(text, this.GetFormatString(this.Format), this.CultureInfo, DateTimeStyles.None, out result);
}
return(isValid);
}
protected override void OnTextChanged(string previousValue, string currentValue)
{
if (!_processTextChanged)
{
return;
}
if (!String.IsNullOrEmpty(currentValue))
{
DateTime current = Value.HasValue ? Value.Value : DateTime.Parse(DateTime.Now.ToString(), CultureInfo.DateTimeFormat);
DateTime result;
var success = DateTimeParser.TryParse(currentValue, GetFormatString(Format), current, CultureInfo, out result);
currentValue = result.ToString();
}
SyncTextAndValueProperties(true, currentValue);
}
protected override void OnTextChanged(string previousValue, string currentValue)
{
if (!_processTextChanged)
{
return;
}
//TODO: clean this up and make sure it doesn't fire recursively
if (String.IsNullOrEmpty(currentValue))
{
Value = null;
return;
}
DateTime current = Value.HasValue ? Value.Value : DateTime.Parse(DateTime.Now.ToString(), CultureInfo.DateTimeFormat);
DateTime result;
var success = DateTimeParser.TryParse(currentValue, GetFormatString(Format), current, CultureInfo, out result);
SyncTextAndValueProperties(InputBase.TextProperty, result.ToString(CultureInfo));
}
