How can assign specific timer EventHandler for specific value in c#
I have array of timer.I want timer0 work with 1st dataValue in _dataValues, 2nd timer work with 2nd dataValue in _dataValues, 3rd timer work with 3rd dataValue in _dataValues and etc and also show result in label in windows form.I use System.Windows.Forms.Timer.Here is my code,
void PrepareTimers(Li开发者_运维问答st<int> _dataValues)
{
int i = 0;
foreach (int dataValue in _dataValues)
{
timerNames[i] ="timer"+ string.Format("{0}", i);
timer1[i] = new Timer();
t[i] = dataValue.ToString();
a[i] = timer1[i].ToString();
a[i] = t[i];
timer1[i].Tick += new EventHandler(timer_Tick);
timer1[i].Interval = (1000) * (1);
label = new Label();
label.Name = "label_name" + i;
label.Size = new Size(200, 20);
label.Location = new Point(45, 100 + i * 30);
label.TabIndex = i;
label.Visible = true;
this.Controls.Add(label);
dict[timer1[i]] = label;
timer1[i].Enabled = true;
timer1[i].Start();
i++;
}
}
private void timer_Tick =(object sender, EventArgs e)
{
string myconstring = "SERVER=localhost;" + "DATABASE=alicosms;" + "UID=root;" + "PASSWORD=;";
MySqlConnection mycon = new MySqlConnection(myconstring);
i = 0;
string u = "UPDATED";
mycon.Open();
foreach (int dataValue in _dataValues)
{
if (a[i] == dataValue.ToString())
{
MySqlCommand cmd = new MySqlCommand("UPDATE sms_data_bankasia set flag = " + (dataValue.ToString()) + " *2 , sendingstatus = '" + u + "' WHERE flag = " + dataValue.ToString() + " LIMIT 1", mycon);
cmd.ExecuteNonQuery();
Console.WriteLine("row update" + dataValue.ToString());
mycon.Close();
mycon.Open();
string sql = "SELECT count(flag) FROM sms_data_bankasia where sendingstatus='UPDATED' AND flag = " + (dataValue.ToString()) + " *2 group by flag";
MySqlCommand comd = mycon.CreateCommand();
comd.CommandText = sql;
MySqlDataReader dtr = comd.ExecuteReader();
try
{
while (dtr.Read())
{
Timer t = (Timer)sender;
dict[t].Text = dtr[0].ToString() + " program Updated " + dataValue.ToString();
}
dtr.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
i++;
}
mycon.Close();
}
But it update 4 row in per sec and every EventHandler work with every dataValue.I want 1st timer update 1 row in 1 sec and show in label that 1row update with 1st dataValue and 2nd timer update 1row in 1 sec and show in another label that 1 row update with 2nd dataValue and so on.What should i do? Any one can help me?
In PrepareTimers
assign a tag to each timer: timer1[i] = new Timer(); timer1[i].Tag = i;
Then you can use this in timer_Tick
instead of looping through the whole array:
i = (int)((Timer)sender).Tag;
int dataValue = _dataValues[i];
//...
instead of:
i = 0;
foreach (int dataValue in _dataValues)
{
if (a[i] == dataValue.ToString())
//...
精彩评论