Operation must use an updateable query.

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Dear All, When i update msaccess file the error comes:

Operation must use an updateable query.

code is

C#

string strSQL = "Update Account set OBAL_AM=(select top 1 OBAL_AM from  Account where Acct_Cd='" + TextBox1.Text + "' and Code_No='" + brcod + "') where  Acct_Cd='" + TextBox2.Text + "'  and Code_No='" + brcod + "'";
            OleDbCommand cmd = new OleDbCommand(strSQL, myConn);
            myConn.Open();
            cmd.ExecuteNonQuery(); myConn.Close();

Posted 25-Jul-14 2:29am

Amit Vasi

Updated 25-Jul-14 3:07am

CHill60

v3

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Sergey Alexandrovich Kryukov 25-Jul-14 9:06am

"ASM" in the tags? Are you serious?
—SA

[no name] 25-Jul-14 9:08am

Your database is probably set to be read-only.

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CHill60 · Answer 1 · 2014-07-25T03:09:00

Solution 1

See this post http://www.mikesdotnetting.com/Article/74/Solving-the-Operation-Must-Use-An-Updateable-Query-error[^]

Posted 25-Jul-14 3:09am

CHill60

Sergey Alexandrovich Kryukov · Answer 2 · 2014-07-25T03:13:00

The error message is so clear that, if you don't fully understand it, you should really read on relational databases and ADO.NET pretty much from scratch, to understand just the basic ideas.

If you are using ExecuteNonQuery, it means that your SQL statement is supposed to modify some data in the database, but your is a select statement, that is, a pure query. Isn't that obvious: you are using ExecuteNonQuery with a query.

With a query, you should use ExecuteReader or ExecuteScalar, to have something to obtain the query results: http://msdn.microsoft.com/en-us/library/system.data.oledb.oledbcommand%28v=vs.110%29.aspx[^].

—SA

Operation must use an updateable query.

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