How to use the myAdapter.Update and OleDbCommandBuilder from dataGridView to update the db2 database

Question

hello,everybody ,it a question makes me crazy .my code is that :
        public string tableName = "";
        public DataSet ds;
        public OleDbDataAdapter myAdapter;
        public string sql = "";
        private   void button12_Click_1(object sender, EventArgs e)
            sql = textBox5.Text.Trim();
            OleDbConnection Conn = new OleDbConnection(st_contractconn);     
            Conn.Open();
            this.comboBox1.Items.Add(this.textBox5.Text);
            try
                System.Text.RegularExpressions.Regex r = new System.Text.RegularExpressions.Regex(@"(?<=from\s)\w+(?=\s)");
                System.Text.RegularExpressions.Match B = r.Match(sql);
                tableName = B.ToString();
               OleDbCommand cmd = new OleDbCommand("SELECT * FROM PT_PO",Conn);
               Conn.Close();
                myAdapter = new OleDbDataAdapter(cmd);
                ds = new DataSet();
                myAdapter.Fill(ds, "PT_PO");
                dataGridView2.DataSource = ds.Tables["PT_PO"].DefaultView;                   
                this.groupBox2.Text = "共查询到" + ds.Tables[0].Rows.Count.ToString() + "条记录" + tableName;
            catch (Exception ex)
                MessageBox.Show(ex.Message);
        private void button26_Click(object sender, EventArgs e)
            OleDbConnection Conn = new OleDbConnection(st_contractconn);
            Conn.Open();
            OleDbCommandBuilder Builder = new OleDbCommandBuilder(myAdapter);
            Validate() ;            
            myAdapter.Update(ds.Tables["PT_PO"]);
            Conn.Close();
            ds.AcceptChanges() ; 
when it run to the myAdapter.Update(ds.Tables["PT_PO"]);  it comes out a wrong "对于不返回任何基表信息的 SelectCommand 不支持动态 SQL 生成。" who knows  it is why ,my QQ is 501212848,thankyou very much.

Answer 1

Hello,
We were a IBM-DB2 shop for over 20 years, when we moved to .NET we found it was better to use the native DB2 data provider which you can download from IBM for free.
Main objects
IBM.Data.DB2.iSeries.iDB2Connection
IBM.Data.DB2.iSeries.iDB2Command
IBM.Data.DB2.iSeries.iDB2Parameter
So you would not use adapters but write code using the key objects above. Then to get new primary keys we would use
SELECT nextval for SOMETABLE_REF_AUTONUMBER_SEQUENCE from sysibm.sysdummy1
Bottom line is the structure is create a connection, create a command, set the connection and command text along with creating parameters as needed.
Please remember to mark the replies as answers if they help and unmark them if they provide no help, this will help others who are looking for solutions to the same or similar problem.
what is the meaning about you ? db2 cannt using adapters  to update the datebase?