getting an error in executing the sql query

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hi

i am getting an error like

<br />
<br />
Data type mismatch in criteria expression.<br />
<br />

i am using wpf (windows application in C#.net )
iam using the access2003 as the database
i had tried as below

OleDbConnection mcon = new OleDbConnection("provider =Microsoft.JET.OLEDB.4.0;data source=D:\\invoice\\invoice.mdb");
               OleDbCommand da = new OleDbCommand("select companyname,customername from invoicetable where date BETWEEN '&11/11/1975&' AND '&11/11/2004&'  order by ID desc", mcon);
               OleDbDataReader dr;
               mcon.Open();
               dr = da.ExecuteReader();

and also i had trind in this way also

OleDbCommand da = new OleDbCommand("select companyname,customername from invoicetable where date BETWEEN '11/11/1975' AND '11/11/2004'  order by ID desc", mcon);

in access database in am saving in date formate like 'mm/dd/yyyy' in shortformate
what is the error that i am doing, please help me

thankq for ur attention thank's a lot

Posted 22-Sep-10 22:16pm

sivakumarmr10

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Sunasara Imdadhusen 23-Sep-10 5:08am

What is the error?

2 solutions

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Goutam Patra · Accepted Answer · 2010-09-22T23:05:00

Solution 1

For access use # to represent date. Converting date into yyyy-mm-dd format would be better. Like

select companyname,customername from invoicetable where date BETWEEN #1975-11-11# AND #2004-11-11#  order by ID desc

Posted 22-Sep-10 23:05pm

Goutam Patra

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[no name] 27-Sep-10 7:12am

Reason for my vote of 5
Automatic vote of 5 for accepting answer.

Tom Deketelaere · Accepted Answer · 2010-09-22T23:09:00

Access has a specific notation for date's, I believe you have to put your date between '#' (so #11/11/1975#).

But it would be far better to use parameters for this, you'll protect yourself from SQL-injections (Google it if you don't know what it is).

In this case you'll have to use oledbparameter.
In your SQL string you replace the date's with '?', and then you add your parameters in the correct order to your command.