How to insert null in datetime type column in sql server

Question

I have a table in which there are some datetime type columns. I use a stored procedure to insert values into the table. In the stored procedure I have variables that accept null

Answer 1

Try using:

if (string.IsNullOrWhiteSpace(InsertDate.Text))
{
    cmd1.Parameters["@InsertDate"].Value = getDate;
}
else
{
    cmd1.Parameters["@InsertDate"].Value = InsertDate.Text;
}

Answer 2

Try something like this, using Add rather than AddWithValue..

DB.Parameters.Add("@date", SqlDbType.DateTime).Value = DBNull.Value;

Answer 3

Try this logic if DBNull.Value is not worked .. use DateTime? null

Ensure that ur database field should allow null

dtexpiry!=null? dtexpiry :(DateTime?) null

Answer 4

if (//some condition)   
{
   cmd.Parameters.AddWithValue("@dateofBirth", txtdob.text);
}
else 
{ 
   cmd.Parameters.AddWithValue("@dateofBirth", DBNull.Value); 
}

Answer 5

In the stored procedure do something like this:

insert into table(date)
values(case when @InsertDate ='' then 
               null 
            else 
               @insertDate 
       end)