先说几句，作为一个还在学习的程序员，掌握的知识有限；但我利用自身所学，给一些像我一样还在学习的码农提供我的绵薄之力！
写的不好，但是尽力了，希望大牛指点。多多吐槽！！！
好了开始说项目需求: 实现新增员工；使用DataGridView控件展示员工信息；实现根据员工工号进行模糊查询；实现删除员工信息；每天只能签到一次；签退前必须已经签到
看到这些需求，我们先要思考下该做什么，理清思路才能更快的完成项目。我通常先搭建窗体，然后根据要求逐步实现项目要求！
这是我们所要用的到的三个窗体
我们建一个辅助类，初始化一个单列的泛型集合，给单列的泛型集合付个初值
class Worker
{
private string id;
private string name;
private int age;
private string sex;
public string ID
{
get
{
return id;
} set
{
id = value;
}
} public string Name
{
get
{
return name;
} set
{
name = value;
}
} public int Age
{
get
{
return age;
} set
{
age = value;
}
} public string Sex
{
get
{
return sex;
} set
{
sex = value;
}
} public static List<Worker> list = new List<Worker>();
public static void Insert()
{
Worker w1 = new Worker();
w1.ID = "20090101";
w1.Name = "王小毛";
w1.Age = 20;
w1.Sex = "男";
list.Add(w1);
Worker w2 = new Worker();
w2.ID = "20090102";
w2.Name = "周新雨";
w2.Age = 19;
w2.Sex = "女";
list.Add(w2);
}
}
这是员工信息维护窗体的Load事件的代码
private void FrmSecond_Load(object sender, EventArgs e)
{
如果list没有数据就添加数据，确保调用这个窗体是，只有在没有数据时才能添加数据！
if (Worker.list.Count==0)
{
Worker.Insert();
}
清除datagridview的英文列，并且绑定数据
dgvList.AutoGenerateColumns = false;
dgvList.DataSource = Worker.list;
}
这是新增里的代码
private void toolStripButton1_Click(object sender, EventArgs e)
{
调用添加员工员工信息窗体
FrmFirst ff = new FrmFirst();
this.Hide();
ff.Show();
}
private void btn1_Click(object sender, EventArgs e)
{
确保一个工号只能添加一次
foreach (Worker item in Worker.list)
{
if (item.ID==txt01.Text)
{
MessageBox.Show("工号已存在！！！！");
return;
} }
添加一个员工信息
Worker w1 = new Worker();
w1.ID = txt01.Text;
w1.Name = txt03.Text;
w1.Age = Convert.ToInt32(txt02.Text);
w1.Sex =cob01.Text;
Worker.list.Add(w1);
FrmSecond fs = new FrmSecond();
this.Close();
fs.Show(); }
这是删除的代码
private void toolStripButton3_Click(object sender, EventArgs e)
{
提示点击是才会删除
DialogResult result = MessageBox.Show("提示","是否删除",MessageBoxButtons.YesNo,MessageBoxIcon.Question);
if(result==DialogResult.Yes)
{
string id = dgvList.SelectedRows[0].Cells[0].Value.ToString();
//string id = dgvList.SelectedCells[0].Value.ToString();
如果ID和我选中的ID相等才会删除
foreach (Worker item in Worker.list)
{
if(item.ID==id)
{
Worker.list.Remove(item);
break;
}
}
}
//dgvList.AutoGenerateColumns = false;
dgvList.DataSource = new BindingList<Worker>(Worker.list); }
这段是重点难点在写这段之前先建好另一个辅助类
class Record
{
public string id { get; set; }
public string name { get; set; }
public DateTime SignInTime { get; set; }
public DateTime SignOutTime { get; set; }
创建一个双列泛型集合
public static Dictionary<string, Record> relist = new Dictionary<string, Record>();
} public int num;
private void 签到ToolStripMenuItem_Click(object sender, EventArgs e)
{
给num赋值，把你选中的type值付给num
Worker w = new Worker();
foreach (Worker item in Worker.list)
{
if (item.Name == dgvList.SelectedCells[1].Value.ToString())
{
w = item;
break;
}
}
num = w.type;
判断如果num是0才可以签到
if (num == 0)
{
Record r = new Record();
r.id = dgvList.SelectedRows[0].Cells[0].Value.ToString();
r.name = dgvList.SelectedRows[0].Cells[1].Value.ToString();
r.SignInTime = DateTime.Now;
Record.relist.Add(r.name, r);
给你选中的type赋值一个1
w.type = 1;
MessageBox.Show("签到成功");
}
else
{
MessageBox.Show("您已经签到过了");
}
} private void 签退ToolStripMenuItem_Click(object sender, EventArgs e)
{
Worker w = new Worker();
foreach (Worker item in Worker.list)
{
if (item.Name == dgvList.SelectedCells[1].Value.ToString())
{
w = item;
break;
}
}
把你选中的type赋值给num
num = w.type;
如果num是1，才可以签退
if (num == 1)
{
foreach (string item in Record.relist.Keys)
{
if (item == dgvList.SelectedRows[0].Cells[1].Value.ToString())
{
Record.relist[dgvList.SelectedRows[0].Cells[1].Value.ToString()].SignOutTime = DateTime.Now;
w.type = 2;
MessageBox.Show("签退成功");
break;
}
}
}
如果是0证明没有签到
else if (num == 0)
{
MessageBox.Show("没有签到，无法签退"); }
否则已经签退过了
else
{ MessageBox.Show("您已经签退过了");
} //dgvList.AutoGenerateColumns = false;
//dgvList.DataSource = new BindingList<Worker>(Worker.list);
}
把员工的签到信息展示在DataGridView上 private void FrmThisd_Load(object sender, EventArgs e)
{
dgvList.AutoGenerateColumns = false;
BindingSource bs = new BindingSource();
bs.DataSource = Record.relist.Values;
dgvList.DataSource = bs; lbl1.Text = dgvList.RowCount.ToString();
}