How to convert datetime datatype to string MVC

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I am doing a project and I got confused in an area that how to convert the date time to string value?

controller

var FromDate = DateTime.Now.AddDays(-1);
                FromDateString = FromDate.ToString();

I am getting correct value to fromdate but it is not passing to FromDateString. This FromDateString have given in parameter of an action method and getting value.
My only problem is that how can I convert this datetime to string ??
FromDateString is given as string and this cannot be changed. Is it possible to do that ?
can anyone please help me to correct my code ??

What I have tried:

have searched for code but didn't get how to write in controller .

Posted 24-May-17 19:52pm

ammu11

Updated 24-May-17 20:37pm

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Maciej Los 25-May-17 2:04am

Why do you need to convert date to string?
Do you want to "convert" date to specific format, such as: ddMMyyyy or MMddyyyy or yyyyMMdd?
What's your problem?
What you mean by saying: "cannot be changed"?

ammu11 25-May-17 2:13am

No I var FromDate I am getting the value that is datetime , this datetime in FromDate, I need to get this value to FromDateString, but it is showing as null. How can I get value to FromDateString ??

Maciej Los 25-May-17 2:19am

Sorry, but i don't get you... Can you be more specific and provide example.
FromDateString returns to me "2017-05-24 08:20:12". It isn't null.

ammu11 25-May-17 2:26am

var FromDate = DateTime.Now.AddDays(-1);
when I give this I am getting yesterdays datetime to FromDate but
when I give this
FromDateString = FromDate.ToString();
the value in FromDate is not passing to FromDateString. Why is that ?? currently FromDateString is in string datatype . I need to passthe value in FromDate to FromDateString. Is that possible ?? When I give I am getting null value .

Maciej Los 25-May-17 2:29am

As i told you, i'm getting correct value. Why you don't - i have no idea. Use debugger.

ammu11 25-May-17 2:37am

Can I please change the variable FromDate to item that is

var item = DateTime.Now.AddDays(-1);

then I am getting value for item as "2017-05-24 08:20:12" but in the second line

FromDateString = item.ToString();

here Iam getting null in FromDateString. since I have declared FromDateString as string so I have given item.tostring(), the the value in item is not passing to FromDateString . this is my problem I have checked with debugger

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OriginalGriff · Accepted Answer · 2017-05-24T20:37:00

The code you show puts a formated string version of yesterday's date into FromDateString - it can't do anything else, and will do so every time you execute that code.

And there is the rub: for FromDateString to be null means that you haven't executed that code at all! Why not? We don't know - we have no idea how the rest of your code works.

So start with the debugger, and put a couple of breakpoints in there. The first one goes on the lines you show above, and the other(s) go when you use FromDateString for anything: passing it to a method, printing it, every where.
Now run your code, and see if the code you show here is executed before any other access to the variable. If it isn't, then you need to look at your code and find out why not - we can't do that for you!
If it is, then you need to look at the definition of FromDateString - is it a local variable that masks a class level variable of the same name and then means you never set the class level version? Again - we can't tell!