/// <summary>
/// 验证输入
/// </summary>
/// <returns></returns>
private static object CoerceValue(DependencyObject d, object baseValue)
{
NumericTextBox host = (NumericTextBox)d;
double res;
if (baseValue is string s)
{
if (double.TryParse(s, out double value))
{
res = host.CheckValue(value);
}
else
{
res = host.Value;
}
}
else if (baseValue is double value)
{
res = host.CheckValue(value);
}
else
{
res = host.Value;
}
if (res.ToString() != host.Text)
{
host.Text = res.ToString();
//通过value刷新Text后，光标置于最后
host.SelectionStart = host.Text.Length;
}
return(res);
}
private static object MinCoerce(DependencyObject d, object baseValue)
{
NumericTextBox host = (NumericTextBox)d;
return((double)baseValue > host.Max ? host.Max : baseValue);
}