Cannot implicitly convert type 'string' to 'System.DateTime?

DateTime.Parse & DateTime.TryParse lets you convert a String into a DateTime object.
More information about those methods here...
http://msdn.microsoft.com/en-us/library/1k1skd40.aspx
http://msdn.microsoft.com/en-us/library/system.datetime.tryparse.aspx


Good Luck!

oxyoo
I tried

myCRpatient.DECEASED_DATE = DateTime.TryParse(patient.p.deceasedDate);
It then told me no overload for method.

The syntax is as follows

if (DateTime.TryParse(patient.p.deceasedDate, out myCRpatient.DECEASED_DATE))
{
  // success, valid date format
}
else
{
  // failed, invalid date format
}

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Either use the syntax above (suggested by Tiggerito) which is more "safe" or use:

myCRpatient.DECEASED_DATE = DateTime.Parse(patient.p.deceasedDate);

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kwh3856,

I see that you have a few of these posts for multiple data type conversions.  Most (all?) data type classes and structures in .NET have a TryParse() method that accepts a string to convert and a variable on which to store the converted value.  The method returns true if parsing succeeded, or false if it failed.  For example:
    if (Int32.TryParse(myString, out myInt))
    {
        // Success! myInt now contains the numeric value of myString
    }
    else
    {
        // Failed! MyInt is not defined.
    }

The TryParse() method only converts from strings to other types.  For conversions between different types, you can use the Convert class.  It has methods to convert to multiple types, such as:
   Convert.ToString()
   Convert.ToInt32()
   Convert.ToByte()
   Convert.ToDate()
   Convert.ToDouble()
   // etc.

Each method is overloaded to accept most data types.  Here's more information on these methods:
    http://articles.techrepublic.com.com/5100-10878_11-5834604.html

And lastly, if you want to convert anything to a string, this is even easier! Every object has a ToString() method that "stringifies" its value.  For example, to convert an Integer to a string, use:
     myIntegerValue.ToString()
And to convert a DateTime value to a string, use:
     myDateTimeValue.ToString()

     I hope this helps.
     -dZ.

tiggerito,
When I tried your code I got this error message
A property or indexer may not be passed as an out or ref parameter
 

if (DateTime.TryParse(patient.p.deceasedDate, out myCRpatient.DECEASED_DATE))------ squiggle under myCRpatient.Deceased_date
 
{
  // success, valid date format
}
else
{
  // failed, invalid date format
}

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tiggerito,
I tried this and got an invalid arguments error message.

if (DateTime.TryParse(patient.p.deceasedDate.ToString, out myCRpatient.DECEASED_DATE))
                    {
                        // success, valid date format
                    }
                    else
                    {
                        // failed, invalid date format
                    }

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If DECEASED_DATE is a property you can not use it with the out keyword. Properties are a kind of syntactic sugar methods and methods are not allowed to be used in conjunction with out.
Try this instead:

DateTime tmpDateTime = myCRpatient.DECEASED_DATE;
if (DateTime.TryParse(patient.p.deceasedDate.ToString, out tmpDateTime))
                    {
                        // success, valid date format
                    }
                    else
                    {
                        // failed, invalid date format
                    }

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oxyoo,
When I tried your example I got
Cannot implicitly convert type 'System.DateTime?' to 'System.DateTime'. An explicit conversion exists (are you missing a cast?)
That occured here

DateTime tmpDateTime = myCRpatient.DECEASED_DATE;  ------ squiggle under myCRpatient.DECEASED_DATE
 
and
The best overloaded method match for 'System.DateTime.TryParse(string, out System.DateTime)' has some invalid arguments
This occured here

if (DateTime.TryParse(patient.p.deceasedDate.ToString, out tmpDateTime))---squiggle line from DateTime all the the way to the last parenthesis
 

Hi,
This means that myCRpatient.DECEASED_DATE is nullable. I have adapted the code below (I made the DateTime nullable), and it should work now:
Read about nullables here:
http://msdn.microsoft.com/en-us/library/1t3y8s4s(VS.80).aspx

DateTime? tmpDateTime = myCRpatient.DECEASED_DATE;
if (DateTime.TryParse(patient.p.deceasedDate.ToString, out tmpDateTime))
                    {
                        // success, valid date format
                    }
                    else
                    {
                        // failed, invalid date format
                    }

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oxyoo,
That fixed the first error message but I am still getting the same second error message.  Any ideas?
The best overloaded method match for 'System.DateTime.TryParse(string, out System.DateTime)' has some invalid arguments
Thanks
Kenny
 

ToString should be ToString()

oxyoo,
Thanks for the update but I still get the error on
The best overloaded method match for 'System.DateTime.TryParse(string, out System.DateTime)' has some invalid arguments
error occurs on this line

if (DateTime.TryParse(patient.p.deceasedDate.ToString, out tmpDateTime2))
I am still trying to digest the information your giving me so I am not sure what to try to fix it.

Got it... i read your above post.....had to add parens to the tostring command

DateTime? tmpDateTime = myCRpatient.DECEASED_DATE;
if (tmpDateTime.HasValue)
{
DateTime tmpDateTime2 = tmpDateTime.Value;
if (DateTime.TryParse(patient.p.deceasedDate.ToString(), out tmpDateTime2))
{
// success, valid date format
}
else
{
// failed, invalid date format
}
}
else
{
// failed, DateTime is null
}

Thank you very much for sticking out with me.  I am still trying to digest the code but I just need to chew on for awhile and I will understand what you did.  Thank you very much.