我编写的程序是一个寄存器,当扫描条形码时,它将进入数据库并提取人员姓名和身份证号,并列出他们扫描时的“时间:”。并且然后当他们第二次扫描时,它会添加一个“超时:”部分,如下所示:
Peters, Alastair (242242) Time In : 14:50 Time Out : 14:50 Time In : 14:50
我正在寻找它做的是当我第一次扫描时你会看到:
Peters, Alastair (242242) Time In : 14:50
然后当您第二次扫描时,它将添加Time Out :
然后删除整行并将其存储在第二个列表框中,因此当人不在时它不会显示。
然后当该人(第三次)扫描时,它将重新列出上一行,但使用新的Time In
任何建议或想法都会非常有帮助!
这是我的代码:
private string CreateNewEntry(string current)
{
var indexIn = current.LastIndexOf("Time In : "); // Get the last index of the word "in"
var indexOut = current.LastIndexOf("Time Out : "); // Get the last index of the word out
if (indexOut > indexIn)
{
return current + " "+"Time In : "; // if the last "out" comes after the last "in"
}
else
{
// If the last "in" comes after the last "out"
return current + " " +"Time Out : ";
}
}
private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
SqlConnection DBConnection = new SqlConnection("Data Source=DATABASE;Initial Catalog=imis;Integrated Security=True");
SqlCommand cmd = new SqlCommand();
Object returnValue;
string txtend = textBox1.Text;
if (e.KeyChar == 'L')
{
DBConnection.Open();
}
if (DBConnection.State == ConnectionState.Open)
{
if (textBox1.Text.Length != 6) return;
{
cmd.CommandText = ("SELECT last_name +', '+ first_name from name where id =@Name");
cmd.Parameters.Add(new SqlParameter("Name", textBox1.Text.Replace(@"L", "")));
cmd.CommandType = CommandType.Text;
cmd.Connection = DBConnection;
returnValue = cmd.ExecuteScalar() + "\t (" + textBox1.Text.Replace(@"L", "") + ")";
DBConnection.Close();
bool found = false;
foreach (var item in listBox1.Items)
{
var entry = item.ToString();
if (entry.Contains(returnValue.ToString()))
{
listBox1.Items.Remove(item);
listBox1.Items.Add(CreateNewEntry(entry) + DateTime.Now.ToString("HH:mm"));
found = true;
break;
}
}
if (!found)
{
listBox1.Items.Add(returnValue + " " + "Time In : " + DateTime.Now.ToString("HH:mm"));
}
textBox1.Clear();
System.IO.StreamWriter SaveFile = new System.IO.StreamWriter(fullFileName);
foreach (object item in listBox1.Items)
SaveFile.WriteLine(item.ToString());
SaveFile.Flush();
SaveFile.Close();
if (listBox1.Items.Count != 0) { DisableCloseButton(); }
else
{
EnableCloseButton();
}
Current_Attendance_Label.Text = "Currently " + listBox1.Items.Count.ToString() + " in attendance.";
e.Handled = true;
}
}