using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Data.SqlClient;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace AGVSystem
{
    
    /// <summary>
    /// 数据库操作
    /// </summary>
    public class ClsDBConn_sql
    {
        /// <summary>
        /// 获取CPU运行的时间
        /// </summary>
        /// <returns></returns>
        [DllImport("kernel32")]
        static extern uint GetTickCount();

        private System.Data.DataSet dt = new System.Data.DataSet();
        private SqlConnection sqlconn = new SqlConnection(Cls.Param.connectStr);
        private SqlDataAdapter sqladapter = null;
        private SqlCommandBuilder sqlcommandb = null;
        private SqlCommandBuilder sqlcommandb_ds = null;
        private BindingSource bindsource = new BindingSource();
        private SqlCommand command = null;

        /// <summary>
        /// 关闭连接
        /// </summary>
        public void ConnClosed()
        {
            try
            {
                if (sqlconn != null)
                {
                    if (sqlconn.State == ConnectionState.Open)
                    {
                        sqlconn.Close();
                    }
                }
            }
            catch
            { 
            }
        }

        /// <summary>
        /// 连接数据库返回dataset
        /// </summary>
        /// <param name="str"> SQL语句</param>
        /// <returns></returns>
        public System.Data.DataSet connDt(string str)
        {
            try
            {
                if (sqlconn.State != ConnectionState.Open)
                    sqlconn.Open();
                sqladapter = new SqlDataAdapter(str, sqlconn);
                sqlcommandb = new SqlCommandBuilder(sqladapter);
                if (dt.Tables.Count > 0)
                    dt.Tables.Clear();
                sqladapter.Fill(dt);
                return dt;
            }
            catch (Exception err)
            {
                MessageBox.Show("SQL：" + str + " , \r\n" + err.Message + " \r\n FunctionName：connDt", "错误！", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return null;
            }
        }

        /// <summary>
        /// 返回可更新的dataset
        /// </summary>
        /// <param name="str"> SQL语句</param>
        /// <returns></returns>
        public System.Data.DataSet dtEdit(string str)
        {
            try
            {
                sqladapter = new SqlDataAdapter(str, sqlconn);
                sqlcommandb_ds = new SqlCommandBuilder(sqladapter);
                if (dt.Tables.Count > 0)
                    dt.Tables.Clear();
                sqladapter.Fill(dt);                
                return dt;
            }
            catch (Exception err)
            {
                MessageBox.Show("SQL：" + str + " , \r\n" + err.Message + " \r\n FunctionName：dtEdit", "错误！", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return null;
            }
        }

        /// <summary>
        /// 更新Dataset数据到数据库
        /// </summary>
        /// <param name="ds"></param>
        /// <param name="adapter"></param>
        /// <returns></returns>
        public bool dtCommit(System.Data.DataSet ds )
        {
            try
            {
                //Int64 t1 = GetTickCount(); 
                int DS = ds.Tables[0].Rows.Count;
                    
                sqladapter.Update(ds);
                //Int64 t2 = GetTickCount() - t1;
                //if (t2 > 2)
                //    MessageBox.Show("update time:"+t2.ToString());
            }
            catch
            {
                //MessageBox.Show(err.Message+"EventName：dtCommit");
                return false;
            }
            return true;
        }

        /// <summary>
        /// 数据库连接到datagridview
        /// </summary>
        /// <param name="str">sql语句</param>
        /// <param name="dataGridView">datagridview控件名称</param>
        public bool connDGV(string str, DataGridView dgv)
        {
            try
            {
                if (sqlconn.State == ConnectionState.Open) sqlconn.Close();
                sqladapter = new SqlDataAdapter(str, sqlconn);
                if (dt.Tables.Count > 0)
                    dt.Tables.Clear();
                sqladapter.Fill(dt);
                if (dt.Tables.Count > 0)
                    dgv.DataSource = dt.Tables[0].Copy();
                return true;
            }
            catch (Exception err)
            {
                MessageBox.Show("SQL：" + str + " , \r\n" + err.Message + " \r\n FunctionName：connDGV", "错误！", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return false;
            }
        }

        /// <summary>
        /// 数据库连接到datagridview，并可通过datagridview修改数据库
        /// </summary>
        /// <param name="str">sql语句</param>
        /// <param name="dataGridView">datagridview控件名称</param>
        public bool connDgvEdit(string str, DataGridView dgv)
        {
            try
            {
                if (sqlconn.State == ConnectionState.Open) sqlconn.Close();
                sqladapter = new SqlDataAdapter(str, sqlconn);
                if (dt.Tables.Count > 0)
                    dt.Tables.Clear();
                sqladapter.Fill(dt);
                sqlcommandb = new SqlCommandBuilder(sqladapter);
                bindsource.DataSource = dt.Tables[0];
                dgv.DataSource = dt.Tables[0];
                dgv.DataSource = bindsource;
                return true;
            }
            catch (Exception err)
            {
                MessageBox.Show("SQL：" + str + " , \r\n" + err.Message + " \r\n FunctionName：connDGVEdit", "错误！", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return false;
            }
        }

        /// <summary>
        /// 提交datagridview的数据
        /// </summary>
        /// <param name="dataGridView">datagridview控件名称</param>
        public bool DgvCommit(DataGridView dgv)
        {
            try
            {
                dgv.EndEdit();
                bindsource.EndEdit();
                sqladapter.Update(dt.Tables[0]);
                return true;
            }
            catch (Exception err)
            {
                MessageBox.Show(err.Message + " \r\n FunctionName：DgvCommit", "错误！", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return false;
            }
        }
        
        /// <summary>
        /// 直接执行SQL语句
        /// </summary>
        /// <param name="sqlstr"></param>
        /// <returns></returns>
        public string Command(string sqlstr)
        {
            try
            {
                int count = 0;
                if (sqlconn.State != ConnectionState.Open) sqlconn.Open();
                command = new SqlCommand(sqlstr, sqlconn);
                count = command.ExecuteNonQuery();
                //sqlconn.Close();
                return count.ToString();
            }
            catch (Exception err)
            {
                return "SQL：" + sqlstr + " , \r\n" + err.Message + " \r\n FunctionName：Command";                
            }
        }

        public bool DtCommand(string Sqlstr, string[,] insertValue)
        {
            try
            {
                if (sqlconn.State == ConnectionState.Open) sqlconn.Close();
                sqladapter = new SqlDataAdapter(Sqlstr, sqlconn);
                if (dt.Tables.Count > 0)
                    dt.Tables.Clear();
                sqlcommandb = new SqlCommandBuilder(sqladapter);
                sqladapter.Fill(dt);
                for (int rw = 0; rw < insertValue.GetLength(0); rw++)
                {
                    System.Data.DataRow drow = dt.Tables[0].NewRow();
                    for (int cl = 0; cl < insertValue.GetLength(1); cl++)
                    {
                        drow[cl] = insertValue[rw, cl];
                    }
                    dt.Tables[0].Rows.Add(drow);
                }
                sqladapter.Update(dt);
                sqlconn.Close();
                return true;
            }
            catch (Exception err)
            {
                MessageBox.Show(err.Message, "错误！", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return false;
            }
        }

        public void gg()
        {
            bindsource.AddNew();
            bindsource.MoveLast();
        }

    }
}