C# Delete database records without SQL text?

Yes you can. You have to localize the date according to your date format using Culture class.But if you are using windows data time format then you don't need to localize it(as i guess it works fine).
But if you have problem with localization then do check the date using datepart()
function of sqlserver.(if u r using it)
Then using adapter's delete command u can update your database using dataset.
e.g.
SqlDataAdapter ad= new SqlDataAdapter("",connectionString);
ad.DeleteCommand.CommandText="Delete................(what ever you command is)";
now call the update method of adapter.
like
ad.Update(dataSet,"TableName");


With Regards.
Enam ul haque.
(Correct me if i'm wrong)