How to Resolve \"Unable to convert MySQL date/time value to System.DateTime\" Error?

MySQL Date/Time Conversion Error Resolution

While retrieving data from a MySQL database, users may encounter the "Unable to convert MySQL date/time value to System.DateTime" error when dealing with the date datatype. This issue occurs due to the representation of dates in MySQL and .NET's System.DateTime.

MySQL stores dates as integers representing days since January 1, 1970, while System.DateTime uses an integer representing the number of ticks since January 1, 0001. This difference in representation can lead to conversion issues.

Resolution

To resolve this error, you need to add the Convert Zero Datetime=True parameter to your connection string. This parameter instructs the data provider to treat date values that are stored as zero in MySQL (representing '0001-01-01 00:00:00') as well, as .NET's DateTime.MinValue (representing January 1, 0001).

Modified Connection String

For example, your connection string could be modified as follows to include the Convert Zero Datetime parameter:

server=localhost;User Id=root;password=mautauaja;Persist Security Info=True;database=test;Convert Zero Datetime=True

By adding this parameter, you ensure that zero date values in MySQL are correctly converted to .NET's DateTime.MinValue, eliminating the conversion error.

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