private void SetLengthValue()
{
SSWC.DataGridLengthUnitType unitType = (SSWC.DataGridLengthUnitType)_comboBox.SelectedItem;
switch (unitType)
{
case SSWC.DataGridLengthUnitType.Auto:
this.Value = SSWC.DataGridLength.Auto;
break;
case SSWC.DataGridLengthUnitType.SizeToCells:
this.Value = SSWC.DataGridLength.SizeToCells;
break;
case SSWC.DataGridLengthUnitType.SizeToHeader:
this.Value = SSWC.DataGridLength.SizeToHeader;
break;
case SSWC.DataGridLengthUnitType.Star:
double starValue;
if (double.TryParse(_textBox.Text, out starValue))
{
// Store the last good star value
_lastValidStarValue = starValue;
this.Value = new SSWC.DataGridLength(starValue, SSWC.DataGridLengthUnitType.Star);
}
else
{
// The user entered something bad so revert to the last good value
_textBox.Text = _lastValidStarValue.ToString(CultureInfo.InvariantCulture);
// The Text binding does not update the Value in this case so set it explicitly
this.Value = new SSWC.DataGridLength(_lastValidStarValue, SSWC.DataGridLengthUnitType.Star);
}
break;
default:
// Treat it as a Pixel length
double pixels;
if (double.TryParse(_textBox.Text, out pixels))
{
// Store the last good pixel value
_lastValidPixelWidth = pixels;
this.Value = new SSWC.DataGridLength(pixels);
}
else
{
// The user entered something bad so revert to the last good value
_textBox.Text = _lastValidPixelWidth.ToString(CultureInfo.InvariantCulture);
// The Text binding does not update the Value in this case so set it explicitly
this.Value = new SSWC.DataGridLength(_lastValidPixelWidth);
}
break;
}
}
private void ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (!this._loadingValue)
{
SSWC.DataGridLengthUnitType unitType = (SSWC.DataGridLengthUnitType)_comboBox.SelectedItem;
if (unitType == SSWC.DataGridLengthUnitType.Star)
{
_textBox.Text = _lastValidStarValue.ToString(CultureInfo.InvariantCulture);
}
else if (unitType == SSWC.DataGridLengthUnitType.Pixel)
{
_textBox.Text = _lastValidPixelWidth.ToString(CultureInfo.InvariantCulture);
}
SetLengthValue();
}
}
