clientlistpanel.cs

社区管理系统

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;
using DataBaseManagerLibrary;

namespace ClientListPanelLibrary
{
    public partial class ClientListPanel : UserControl
    {
        private DataBaseManager DBManager;
        private Int64 dealID,insertDealID;
        private int selectedIndex;

        public ClientListPanel()
        {
            InitializeComponent();
            /*String SqlConnectInfo = "server=localhost;database=CommnityManagementSystem;uid=sa;pwd=''";
            DBManager = new DataBaseManager(SqlConnectInfo);*/
            reset();
        }

        private void bSearch_Click(object sender, EventArgs e)
        {
            String cmd;
            if (checkInput("Select") == false) return;  //用户输入不合法
            cmd = generateSelectCommand();    //根据输入情况生成相应的命令

            DataTable dataTable = DBManager.ExecuteSelectCommand(cmd);
            if (dataTable == null)
            {  //数据库出错
                MessageBox.Show(DBManager.errorMessage);
                return;
            }
            else if (dataTable.Rows.Count == 0)
            {//没有搜索到对应信息,显示一个空的DataGridView
                dataGridView.DataSource = dataTable;
                return;
            }
            else
            {//至少找到一条信息，将信息显示到DataGridView，并将第一条信息详细列出
                dataGridView.DataSource = dataTable;
                showDetailInfo(0);
            }
        }

        public void visilize() {
            reset();    //将各个控件置为初始状态
            this.Visible = true;
        }

        public void disVisilize() {
            this.Visible = false;
        }

        public void setDataBaseManager(DataBaseManager DBManager){
            this.DBManager=DBManager;
        }

        private bool ErrorMessage(String msg) {
            MessageBox.Show(msg);
            return false;
        }

        private void dataGridView_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            if (e.RowIndex == -1 || e.RowIndex >= dataGridView.Rows.Count-1) return; //选择多行或选择列标签
            showDetailInfo(e.RowIndex);
            selectedIndex = e.RowIndex;
        }

        private void bDelete_Click(object sender, EventArgs e)
        {
            String cmd = generateDeleteCommand();
            int affectRows = DBManager.Execute(cmd);
            if (affectRows == -1)
            {  //数据库出错
                MessageBox.Show(DBManager.errorMessage);
                return;
            }
            else if (affectRows == 0) {
                MessageBox.Show("此数据已被其他登陆用户删除");
            }
            if (selectedIndex == dataGridView.Rows.Count - 2) {
                dataGridView.Rows.Remove(dataGridView.Rows[selectedIndex]);
                selectedIndex--;
                if (selectedIndex == -1){//若DataGridView没有数据则重置界面
                    reset();
                    return;
                }
            }
            else dataGridView.Rows.Remove(dataGridView.Rows[selectedIndex]);
            showDetailInfo(selectedIndex);
        }
        //////////////////////////////////////////////////////////
        private void bAdd_Click(object sender, EventArgs e)
        {
            String cmd;
            if (checkInput("Insert") == false) return;//用户输入错误

            cmd = generateSelectCommand();    //首先查找数据库中有没有相同内容的行

            DataTable dataTable = DBManager.ExecuteSelectCommand(cmd);
            if (dataTable == null)
            {  //数据库出错
                MessageBox.Show(DBManager.errorMessage);
                return;
            }
            else if (dataTable.Rows.Count > 0)
            {
                MessageBox.Show("数据库中已存在相同信息");
                return;
            }

            //将信息添加到数据库
            cmd = generateInsertCommand();    //根据输入情况生成相应的命令

            int affectedRows = DBManager.Execute(cmd);

            if (affectedRows == -1)
            {  //数据库出错
                MessageBox.Show(DBManager.errorMessage);
                return;
            }
            else if (affectedRows == 0)
            {//
                MessageBox.Show("插入失败");
                return;
            }
            else
            {//插入成功，
                showDetailInfo(selectedIndex);//显示插入前的一行

                /*DataRow row = new DataRow();
                row.set
                row.ItemArray={insertDealID,tbName.Text};
                DataGridViewCell[] cell = new DataGridViewCell[6];
                for (int i = 0; i < 6; i++) cell[i] = new DataGridViewCell();
                row.Cells = cell;
                row.Cells[0].Value=insertDealID;
                row.Cells[1].Value=tbName.Text;
                row.Cells[2].Value=cbSex.Text;
                row.Cells[3].Value=int.Parse(tbAge.Text);
                row.Cells[4].Value=tbWork.Text;
                row.Cells[5].Value=cbPreferedCategory.Text;
                row.Cells[6].Value=tbPreferedArea.Text;

                dataGridView.Rows.Add(row);
                int idx = dataGridView.Rows.IndexOf(row);
                selectedIndex = idx;
                showDetailInfo(idx);
              */
            }
        }

        private void reset()
        {
            dealID = 0;
            selectedIndex = -1;
            bModify.Enabled = false;
            bDelete.Enabled = false;
            tbName.Text = "";     //清空TextBox及ComboBox
            cbSex.Text = "";
            tbAge.Text = "";
            tbWork.Text = "";
            tbTel.Text = "";
            tbCellPhone.Text = "";
            cbPreferedCategory.Text = "";
            cbPreferedCategory.Text = "";
            tbPreferedArea.Text = "";
            tbPrepayAmmount.Text = "";
            tbUsage.Text = "";
            tbAddress.Text = "";
        }

        private void bModify_Click(object sender, EventArgs e)
        {
            String cmd;
            if (checkInput("Modify") == false) return;  //用户输入不合法
            cmd = generateUpdateCommand();    //根据输入情况生成相应的命令

            int affectRows = DBManager.Execute(cmd);
            if (affectRows == -1)
            {  //数据库出错
                MessageBox.Show(DBManager.errorMessage);
                return;
            }
            else if (affectRows == 0)
            {//没有搜索到对应信息
                MessageBox.Show("信息可能已被其他用户删除");
                return;
            }
            else