i cant update my mysql database

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i have two form, main form and form update. form update contain is some textboxes and button, and main form containt datagridview from database.. i want to update the database using form update. i tried this code, but it can't be update..

private void button1_Click_1(object sender, EventArgs e)
        {
            try
            {
                Form1 form1 = (Form1)this.Owner;
                MySqlConnection conn = new MySqlConnection("server=localhost;User Id=root;database=sma9");
                dt = new DataTable();
                MySqlDataAdapter adp = new MySqlDataAdapter("UPDATE tbukux SET judulbuku="+txtjudul.Text+",namakategori=" + txtkategori.Text + ",pengarang=" + txtpengarang.Text + ",penerbit" + txtpenerbit.Text + ",tahunterbit=" + txttahun.Text + ",stokbuku=" + txtstok.Text + ",tglpenerimaan=" + tglter.Text + ") WHERE kodebuku=" + txtkode.Text + "", conn);
                adp.Fill(dt);
                MessageBox.Show("Data Berhasil Disimpan");
                DataTable dt1 = new DataTable();
                MySqlDataAdapter adp1 = new MySqlDataAdapter("select * from tbukux", conn);
                adp1.Fill(dt1);
                form1.gridbuku.DataSource = dt1;
            }

            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }             
        }

MySql.Data.mysqlclient.mysqlexception (0x800040005) ": you have en error in your sql syntax blah blah blah

please help me

Posted 23-May-12 7:40am

Member 8743576

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Comments

Sandeep Mewara 23-May-12 13:42pm

You have to update the question with your full error. Basically, what was this 'blah blah blah..."?

Ed Nutting 23-May-12 13:58pm

What does it say about a coder, I wonder, when they manage to discard the most useful bit of the error message? :P

Sandeep Mewara 23-May-12 14:23pm

+5! :)

I know how much I controlled myself on not commenting about the coder here when posting comment of 'blah blah blah'.... :)

Ed Nutting 23-May-12 14:30pm

Thank you and yes that was about the most restrained I could get :)

3 solutions

Solution 1

from your code above I think you should remove ) before WHERE in the UPDATE command text. I hope this will help.

Posted 23-May-12 7:58am

Issam Ali

Solution 3

thanks to Mika Wendelius, its really working... :)

Posted 23-May-12 16:04pm

Member 8743576

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Wendelius · Accepted Answer · 2012-05-23T08:24:00

You seem to have an extra ) and you miss equal sign after penerbit

And another observation: Don't concatenate values directly to your SQL statement since this leaves you open to SQL injections, data type conversion problems and so on. Instead use MySqlParameter[^].

So your statement should look something like:

C#

MySqlDataAdapter adp = new MySqlDataAdapter(@"
UPDATE tbukux 
SET judulbuku     = @judulbuku,
    namakategori  = @namakategori,
    pengarang     = @pengarang,
    penerbit      = @penerbit,
    tahunterbit   = @tahunterbit,
    stokbuku      = @stokbuku,
    tglpenerimaan = @tglpenerimaan
WHERE kodebuku = @kodebuku", conn);
...