C# SQL Server compare date with string

Question

I have to compare a table field that is a date stored as varchar in the format \'dd/MM/yyyy\' with a date value, but the comparison fails. I have exception

Answer 1

Use Parameter to pass date values refer @Zohar Peled post. This is the proper method handling date values. OR You can pass the date value in ISO format, refer the below code.

string dateFormat = date.ToString("yyyy/MM/dd");


string sql = "select * from TB_RICHIESTE where CONVERT(DATE, Date) <= CONVERT(DATE, '" + dateFormat + "')";