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Search all dates before a specific date in a database (VB.NET|OLE)
原标题:

I have a database (MDB, Access) and I connect it to my program using an OLE object, now I have in the db a column filled with dates (ddmmyy),

I want to search and view (in Data grid view) all the fields that has a date before a Specific Date that I define .

the code of search that I used is :

 SQLstr = "SELECT * FROM tb WHERE anomber =  " & TextBox1.Text & " "

What do I have to do?. Thanks.

问题回答

use the parameters to pass the date to the query, it s more saver(no sql injection) and more perfect(it will convert the date format to the correct format)

SQLstr = "SELECT * FROM tb WHERE anomber < ?"
Command.Parameters.Add(New OleDbParameter("@anomber", TextBox1.Text))
Command.CommandText = SQLstr 

Edit: if the anomber field is the date field so the user can use < instead of =.

the OP question not clear about what he wants.

Edit2: after executing the command you should assign the results to the grid that you are using to display the data.





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