private static bool Compare(object leftOperand, ComparisonConditionType operatorType, object rightOperand)
{
if (leftOperand != null && rightOperand != null)
{
rightOperand = TypeConverterHelper.Convert(rightOperand.ToString(), leftOperand.GetType().FullName);
}
IComparable comparable = leftOperand as IComparable;
IComparable comparable2 = rightOperand as IComparable;
if (comparable != null && comparable2 != null)
{
return(DataTriggerBehavior.EvaluateComparable(comparable, operatorType, comparable2));
}
switch (operatorType)
{
case ComparisonConditionType.Equal:
return(object.Equals(leftOperand, rightOperand));
case ComparisonConditionType.NotEqual:
return(!object.Equals(leftOperand, rightOperand));
case ComparisonConditionType.LessThan:
case ComparisonConditionType.LessThanOrEqual:
case ComparisonConditionType.GreaterThan:
case ComparisonConditionType.GreaterThanOrEqual:
if (comparable == null && comparable2 == null)
{
throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, "InvalidOperands", new object[]
{
(leftOperand != null) ? leftOperand.GetType().Name : "null",
(rightOperand != null) ? rightOperand.GetType().Name : "null",
operatorType.ToString()
}));
}
if (comparable == null)
{
throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, "InvalidLeftOperand", new object[]
{
(leftOperand != null) ? leftOperand.GetType().Name : "null",
operatorType.ToString()
}));
}
throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, "InvalidRightOperand", new object[]
{
(rightOperand != null) ? rightOperand.GetType().Name : "null",
operatorType.ToString()
}));
default:
return(false);
}
}
public static object Convert(string value, string destinationTypeFullName)
{
if (string.IsNullOrEmpty(destinationTypeFullName))
{
throw new ArgumentNullException("destinationTypeFullName");
}
string scope = TypeConverterHelper.GetScope(destinationTypeFullName);
if (string.Equals(scope, "System", StringComparison.Ordinal))
{
if (string.Equals(destinationTypeFullName, typeof(string).FullName, StringComparison.Ordinal))
{
return(value);
}
if (string.Equals(destinationTypeFullName, typeof(bool).FullName, StringComparison.Ordinal))
{
return(bool.Parse(value));
}
if (string.Equals(destinationTypeFullName, typeof(int).FullName, StringComparison.Ordinal))
{
return(int.Parse(value, CultureInfo.InvariantCulture));
}
if (string.Equals(destinationTypeFullName, typeof(double).FullName, StringComparison.Ordinal))
{
return(double.Parse(value, CultureInfo.CurrentCulture));
}
}
string type = TypeConverterHelper.GetType(destinationTypeFullName);
string text = string.Format(CultureInfo.InvariantCulture, "<ContentControl xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation' xmlns:c='using:{0}'><c:{1}>{2}</c:{1}></ContentControl>", new object[]
{
scope,
type,
value
});
ContentControl contentControl = XamlReader.Load(text) as ContentControl;
if (contentControl != null)
{
return(contentControl.Content);
}
return(null);
}
