MySQL Datetime --> VB.NET Datetime Conversion Prob Any solutions ??

[miCRoSCoPiC^eaRthLinG 0]

Hi,
Can anyone provide me with a quick example of fetching a MySQL Datetime Field and converting it into native VB.NET DateTime format ?? Say for example my db contains a couple of fields: Field1, Field2, DateField... one of which is the default MySQL DateTime.

Say I'm using the following code to connect...

ConnectionString = "....."QueryString = "SELECT * FROM SomeTable"Dim myConnection As New MySql.Data.MySqlClient.MySqlConnection(ConnectionString)Dim myCommand As New MySql.Data.MySqlClient.MySqlCommand(QueryString, myConnection)Dim myReader As MySqlDataReaderTrymyConnection.Open()myReader = myCommand.ExecuteReaderWhile myReader.ReadField1 = myReader.Item ("Field1")Field2 = myReader.Item ("Field2")Field3 = myReader.Item ("DateField")End While'Close the connectionmyReader.Close()myConnection.Close()Catch exEvent As Exception'Do SomethingEnd Try

As you can see the query result is being broken up and stored into three separate fields, Field1, Field2 & Field3... Now:
1. If all these variables are declared as String - what would be the exact syntax to convert that DATETIME field into a String on the fly
2. If the Field3 variable is declared as VS.NET DateTime then what would be the syntax to convert it ..

I tried out a typecasting too:

While myReader.ReadField3 = ctype(myReader.Item ("DateField"), string)End While

In this case I receive an error message saying "Unable to convert mysql Date/Time value to System.DateTime"... BTW, am using the .NET Connector 1.0.4 and VS2003.

Any help would be really appreciated.

Thanks a million

[Hercco 0]

I don't have actual solution for this and this might be a stupid suggestion but wouldn't using MySQL DATE_FORMAT to convert the data to suitable format first help?

[miCRoSCoPiC^eaRthLinG 0]

I don't have actual solution for this and this might be a stupid suggestion but wouldn't using MySQL DATE_FORMAT to convert the data to suitable format first help?

<{POST_SNAPBACK}>

I've tried using all sorts of date formatting options - the problem is that even if you format the date otherwise, it is still not returned as a STRING type to VB. Instead VB still gets a pointer to that reformatted mysql date which is still in the native mysql DATETIME type and cannot be cast into a STRING directly or even with help of the mysql connector.net dll - I mean I'm sure it can be done using the connector.net - but I'm unable to and that why searching for the right syntax. If I can't perform this type conversion I'll have to resort to storing DATEs as CHAR/VARCHAR in MySQL - basically as STRINGS and not be able to use any of the great DATE/TIME calculation & handling features available in mysql....

[miCRoSCoPiC^eaRthLinG 0]

Found a soution from MySQL Forums.

 

It worked with some additions to the connection string: "allow zero datetime=no" - that made the type cast work perfectly. Here's the working code again for your reference.

 

Dim BirthDate as Date................ConnectionString = "Server=.....;....; allow zero datetime=no"QueryString = "Select * from whatever"'Code for query............BirthDate = CType ( myReader.Item ( "BirthDate" ), Date )

That's it - now you can format the BirthDate variable to any desired format using the VB.Net "Format" command. Also this way you don't have to specify how to pre-format and fetch a field in the Query String. A simple "SELECT *" suffices - you just pick that specific field and typecast it to the native VB.NET format.

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