public void TestConvertTo()
{
{
try
{
HandyConvert.ConvertTo <int>(null);
Assert.IsFalse(true);
}
catch (InvalidCastException)
{
}
}
{
HandyConvert.ConvertTo <int>("32");
HandyConvert.ConvertTo <int>(32.5);
HandyConvert.ConvertTo <int?>(32.5);
Assert.IsTrue(HandyConvert.ConvertTo <bool>(123));
Assert.IsTrue(HandyConvert.ConvertTo <bool>(-123));
Assert.IsFalse(HandyConvert.ConvertTo <bool>(0));
}
{
try
{
HandyConvert.ConvertTo <bool>("1");
Assert.IsFalse(true);
}
catch (FormatException)
{
}
}
}
//public static Expression<Func<TEntity, bool>> ToExpression<TEntity>(ParameterExpression param, params Lambda[] lambdas)
//{
//}
private static Expression <Func <TEntity, bool> > GetExpression <TEntity>(ExpressionType expressionType, ParameterExpression param, MemberExpression member, dynamic value, Type propertyType)
{
var convertValue = HandyConvert.ConvertTo(value, propertyType);
if (propertyType.IsNullable())
{
var binary = Expression.MakeBinary(expressionType, member, Expression.Convert(Expression.Constant(convertValue), propertyType));
return(Expression.Lambda <Func <TEntity, bool> >(binary, param));
}
else
{
var binary = Expression.MakeBinary(expressionType, member, Expression.Constant(convertValue));
return(Expression.Lambda <Func <TEntity, bool> >(binary, param));
}
}