Error when filling dataadapter

[dovobet]

hi

I keep getting this message whenever I delete something from a database. What I am doing is implementing the delete fucntion for a post in a forum. I have two applciation a Webservice and a Website

Here is my code for the method in the service

[WebMethod]
    public DataSet GetPosts(string queryStr)
    {
        DataSet ds = new DataSet();
        setupConnection();
        OleDbDataAdapter myDataAdapter = new OleDbDataAdapter(queryStr, connection);

        myDataAdapter.Fill(ds, "Posts");
        connection.Close();
        return ds;
    }

and here is the code in the website

protected void Repeater_ItemCommand(object sender, RepeaterCommandEventArgs e)
    {
        DataSet ds;
        int postId = Convert.ToInt32(e.CommandArgument);
        switch (e.CommandName)
        {
            case "Del":
                Response.Write("the id of the post clicked = " + postId);
                string delPost = "DELETE * FROM Posts WHERE PostID =" + postId;
                myws.DeletePost(delPost);
                object temp = Session["trdID"];
                int h = Convert.ToInt32(temp) + 1;
                object temp2 = Session["secID"];
                int i = Convert.ToInt32(temp2) + 1;
                string queryStr = "SELECT Posts.*, Accounts.* FROM Posts INNER JOIN Accounts ON Posts.AccountID = Accounts.ID WHERE ThreadID = "+h+" AND SectionID = "+i+" ORDER BY DateCreated";
                ds = myws.GetPosts(queryStr);
                BindRepeater();
                break;

            case "Edit":
                break;
        }
    }

However I get a SOAP exception on this line

ds = myws.GetPosts(queryStr);

...with...
____
"System.Data.OleDb.OleDbException: No value given for one
or more required parameters."
____


This is due to the dataadapter not being able to be filled for some reason. I dont know if its because im deleting from an access database or not...


Can anyone help?