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Date Function in Vb.net

Posted on 2003-11-20
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Last Modified: 2010-05-01
I want to bring data from MS Access where date Column >= some date

I m writing this code in VB.net



thisquery = "select * from TABLE where DTCOLUMN >= '" & CDate(newdate) & "'"

The access table has a Coulmn DTCOLUMN of type date/time

Its giving me an error..
Data type mismatch

Please let me know .
Thanks
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Question by:tjpj
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6 Comments
 
LVL 4

Expert Comment

by:MajinLoki
ID: 9790379
you need to use a datetime object

then, in your sql, you can parse in a date

thisquery = "select * from TABLE where DTCOLUMN >= '" & DateTime.Parse("date_as_string") & "'"
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Author Comment

by:tjpj
ID: 9790590

Now
Its giving me the following error :

The string was not recognized as a valid DateTime. There is a unknown word starting at index 0.
0
 
LVL 4

Accepted Solution

by:
MajinLoki earned 80 total points
ID: 9791329
I did a couple tests.  

at the top, I have
Imports sql = System.Data.SqlClient


Dim connect As sql.SqlConnection
        Dim cm As sql.SqlCommand
        Dim temp As String, test As Integer

        connect = Manager.getconnect() 'this is my own method which returns a connection to the database
        connect.Open()

        'sent is a datetime field in my database

        temp = "select count(*) from table where sent >= '4/4/2003'"
        cm = New sql.SqlCommand(temp, connect)
        test = cm.ExecuteScalar()
        MsgBox(test)

        temp = "select count(*) from table where sent >= '" & DateTime.Parse("4/4/2003") & "'"
        cm.CommandText = temp

        test = cm.ExecuteScalar()

        MsgBox(test)

Both statements execute and both statements return the same value from my database.
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