Convert String to date

Hi Experts,

I have a date in string format. I want to display it in a date picker control. I am using the following code.

Dim Stk_Date As String = "20140713"
Dim dt As DateTime = DateTime.Parse((Stk_Date).ToString("yyyy-MM-dd"))

I am getting the error  "Unable to cast object of type "System.string" to type "system.IFormatProvider"  "

Thank you.
RadhaKrishnaKiJayaAsked:
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AndyAinscowFreelance programmer / ConsultantCommented:
>>Dim Stk_Date As String = "20140713"

That is already a string, using the ToString doesn't make sense.  Where do you get this value of 20140713 from?
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louisfrCommented:
I think you misplaced a parenthesis:
Dim dt As DateTime = DateTime.Parse((Stk_Date)).ToString("yyyy-MM-dd")

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RadhaKrishnaKiJayaAuthor Commented:
Thank you for your reply. Date is in the database in string format.

Dim Stk_Date As String = Reader.Item("STK_DATE")
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AndyAinscowFreelance programmer / ConsultantCommented:
>>Date is in the database in string format.

OK, odd way to do it but OK.
The simplest would be to strip the string into the relevant parts assuming it is always 4 digit year, 2 digit month and 2 digit day as you have in your example.

Dim Stk_Date As String = "20140713"
Dim s2 As String = Stk_Date.Substring(0, 4) + "-" + Stk_Date.Substring(4, 2) + "-" + Stk_Date.Substring(6, 2)
Dim dt As DateTime = DateTime.Parse(s2)
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RadhaKrishnaKiJayaAuthor Commented:
It Worked!!! Thank you very much for your help.
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