在GridView帮定数据时把太长的字段替换成.....

    private void bind()
    ...{
        string con = ConfigurationManager.AppSettings["AccessDataBase"] + Server.MapPath("App_Data/details.mdb");
        OleDbConnection dbconnection = new OleDbConnection(con);
        dbconnection.Open();
        OleDbCommand cmd = new OleDbCommand("select * from news", dbconnection);
        DataSet ds = new DataSet();
        OleDbDataAdapter oda = new OleDbDataAdapter(cmd);
        oda.Fill(ds);
        GridView1.DataSource = ds;
        GridView1.DataBind();


        //让在GridView中多余的汉字用""代替
        for (int i = 0; i < =GridView1.Rows.Count-1; i++)
        ...{
            DataRowView mydrv;
            string gintro;
            if (GridView1.PageIndex == 0)
            ...{                //这里吧DataSet的视图赋值给了DataRowView
                //处理第一页的5个记录
                mydrv = ds.Tables[0].DefaultView[i];
                gintro = Convert.ToString(mydrv["content"]);
                GridView1.Rows[i].Cells[2].Text = substr(gintro, 5);
            }
            mydrv = ds.Tables[0].DefaultView[i+5*(GridView1.PageIndex)];
            gintro = Convert.ToString(mydrv["content"]);
            GridView1.Rows[i].Cells[2].Text = substr(gintro, 5);
        }

    }

    public string substr(string sstring, int nleng)
    ...{
        if (sstring.Length <= nleng)
        ...{
            return sstring;
        }
        string snewstr = sstring.Substring(0, nleng);
        snewstr = snewstr + "";
        return snewstr;
    }