将日期从视觉基本转换为c-sharp

Question

So as an excercise in utility i've taken it upon myself to convert one of our poor old vb .net 1.1 apps to C# .net 4.0.

I used telerik code conversion for a starting point and ended up with ~150 errors (not too bad considering its over 20k of code and rarely can i get it to run without an error using the production source) many of which deal with time/date in vb versus c#.

my question is this how would you represent the following statement in VB

If oStruct.AH_DATE <> #1/1/1900# Then

in C#? The converter gave me

            if (oStruct.AH_DATE != 1/1/1900 12:00:00 AM) {

which is of course not correct but I cannot seem to work out how to make it correct.

Answer 1

 if (oStruct.AH_DATE != new DateTime(1900, 1, 1){

Answer 2

You may try this construct :

if ( DateTime.Compare(oStruct.AH_DATE, new DateTime(1900, 1, 1)) == 0 )
{
// your code here
}

Here is a reference how to compare DateTimes in .NET - DateTime.Compare Method

Note: Comparing two dates like integers may lead you to wrong results. Because, date-time structure in .NET has its specific properties. I would always try to be attentive when comparing two dates, and always choose DateTime.Compare to be on a safer side.

Answer 3

这应该工作：

if (oStruct.AH_DATE != DateTime.Parse("1/1/1900"))