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發表於 13-1-31 11:25
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D大您好 我改了K大的程式碼
我的作法是
1.直接只開一個Service(CATDDE->E-Leader) Topic -> FUTOPT<FO>TXFB3
當我按btnAddConnect_Click啟動後直接開兩個ITEM(CurPrice, TickVol)
public partial class DDEClientFrm : Form
{
private Hashtable ht_conn; //保存以 (連線字串) 為 key; 所建立的 DdeClient instance 為 object.
//private Hashtable ht_item; //保存以 (連線字串+項目名稱) 為 key; 項目值為 object
private Hashtable ht_gdv; // 保存以 (連線字串+項目名稱) 為 key;
private Queue myQueue = new Queue(); // 保存DDEClient 收到的 Item
public DDEClientFrm()
{
InitializeComponent();
ht_conn = new Hashtable();
//ht_item = new Hashtable();
ht_gdv = new Hashtable();
//Queue myQueue = new Queue();
}
/** 新增 DDE連線 的事件處理
*
*/
private void btnAddConnect_Click(object sender, EventArgs e)
{
if (ht_conn.ContainsKey(txtService.Text + "|" + txtTopic.Text))
{
MessageBox.Show("連線字串不能重覆！");
return;
}
DdeClient dc = new DdeClient(txtService.Text, txtTopic.Text);
//register the event handler
dc.Disconnected += client_Disconnected;
dc.Advise += client_Advise;
try
{
// Connect to the server. It must be running or an exception will be thrown.
dc.Connect();
dgConnection.Rows.Add(txtService.Text, txtTopic.Text, "已連線");
//利用 "service|topic" 為 HashTable 的 Key; DdeClient 為 Object.
string key = txtService.Text + "|" + txtTopic.Text;
ht_conn.Add(key, dc);
}
catch (Exception thrown)
{
MessageBox.Show("無法連結 DDE Server：" + thrown.Message);
}
/* Added By Jerry
* Add Items
* End Added By Jery*/
this.AddItem(dc, "CurPrice"); //新增 Item
this.AddItem(dc, "TickVol"); //新增 Item
}
2. 在 client_Advise 中把收到的item 直接放進myQueue中
private void client_Advise(object sender, DdeAdviseEventArgs args)
{
DdeClient dc = (DdeClient)sender;
ValueItem it = new ValueItem();
it.item = args.Item;
it.value = args.Text;
it.time = DateTime.Now;
myQueue.Enqueue(it);
}
3.目前測試中所以一直讓QUEUE自動增加到我按停止連線同時Output 整個Queue
void BtnStopConnectClick(object sender, EventArgs e)
{
string key = txtService.Text + "|" + txtTopic.Text;
DdeClient client_conn = (DdeClient)ht_conn[key];
this.Stop_advise(client_conn, "CurPrice");
this.Stop_advise(client_conn, "TickVol");
//刪除所儲存連線資訊的 key/value, 以及將該 DdeClient 連線移除。
ht_conn.Remove(key);
client_conn.Dispose();
//將所在的連線資料列刪除掉
dgConnection.Rows.RemoveAt(0);
using (System.IO.StreamWriter file = new System.IO.StreamWriter(@"R:\DDE.txt"))
while (myQueue.Count > 0)
{
ValueItem it = (ValueItem) myQueue.Dequeue();
file.WriteLine(it.item);
file.WriteLine(it.value);
file.WriteLine(it.time);
}
}
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發表於 13-1-29 11:50
顯身卡