How can we pass a empty Value to dateTime Parameter to a stored procedure from c#

Question

How can we pass a empty Value to dateTime Parameter to a stored procedure EndDate=null:

da.SelectCommand.Parameters.Add("@EndDate", SqlDbType.DateTime).Value = EndDate

Answer 1

As like the error message says it is not possible to convert the null or DbNull.Value to DateTime if you specify the expected datatype as SqlDbType.DateTime in add method. So better option is AddWithValue. Use like the following:

command.Parameters.AddWithValue("@dateparameter", DBNull.Value);

For more link

Answer 2

Try Below Code

  da.SelectCommand.Parameters.Add("@StartDate", SqlDbType.NVarChar).Value 
= StartDate.ToString("dd-MMM-yyyy");