FamilyForm.cs

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//文件名：FamilyForm.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

using System.Data.SqlClient;

namespace MyPersonnel
{
    public partial class FamilyForm : Form
    {
        public FamilyForm()
        {
            InitializeComponent();
        }

        private void 员工家庭成员BindingNavigatorSaveItem_Click(object sender, EventArgs e)
        {
            this.Validate();
            this.员工家庭成员BindingSource.EndEdit();
            this.员工家庭成员TableAdapter.Update(this.myPersonnelDataSet.员工家庭成员);

        }

        private void FamilyForm_Load(object sender, EventArgs e)
        {
            // TODO: 这行代码将数据加载到表“myPersonnelDataSet.员工家庭成员”中。您可以根据需要移动或移除它。
            this.员工家庭成员TableAdapter.Fill(this.myPersonnelDataSet.员工家庭成员);
            this.myPersonnelDataSet.员工家庭成员.Rows.Clear();
        }

        private void bindingNavigatorAddNewItem_Click(object sender, EventArgs e)
        {
            //自动计算员工家庭成员自编号
            String MySQLConnectionString = global::MyPersonnel.Properties.Settings.Default.MyPersonnelConnectionString;
            SqlConnection MyConnection = new SqlConnection(MySQLConnectionString);
            MyConnection.Open();
            SqlCommand MyCommand = MyConnection.CreateCommand();
            MyCommand.CommandText = "Select max(自编号) 最大编号 From 员工家庭成员";
            object MyResult = MyCommand.ExecuteScalar();
            Int64 MyID = 1;
            if (MyResult != System.DBNull.Value)
            {
                String MyMaxID = MyResult.ToString().Trim();
                MyMaxID = MyMaxID.Substring(2, MyMaxID.Length - 2);
                MyID = Convert.ToInt64(MyMaxID) + 1;
            }
            int MyLength = MyID.ToString().Length;
            string MyNewID = "";
            switch (MyLength)
            {
                case 1:
                    MyNewID = "JT0000000" + MyID.ToString();
                    break;
                case 2:
                    MyNewID = "JT000000" + MyID.ToString();