[英]Is it possible to prevent auto delete message after read in Msmq
IDE:VS 2010,Winforms:
我有一個簡單的msmq發送/接收應用程序,我有一個要求,我將在其中讀取消息,並根據該消息,如果該函數尚未就緒,則我將調用其他函數,然后我希望消息進入隊列。
我的Msmq發送接收代碼:
private void button1_Click(object sender, EventArgs e)
{
//MSMQ Send :
if (MessageQueue.Exists(@".\Private$\MyQ"))
{
myQ = new MessageQueue(@".\Private$\MyQ");
}
else
{
myQ = MessageQueue.Create(@".\Private$\MyQ");
}
string xmlText = getxmlString();
System.Messaging.Message msg = new System.Messaging.Message();
msg.Formatter = new XmlMessageFormatter();
msg.Body = xmlText;
msg.Label = "MyXmlMessage";
msg.Priority = MessagePriority.Normal;
myQ.Send(msg);
}
private void button2_Click(object sender, EventArgs e)
{
//MSMQ Receive
myQ = new MessageQueue(@".\Private$\MyQ");
System.Messaging.Message myMsg = myQ.Receive();
myMsg.Formatter = new XmlMessageFormatter(new String[] { "System.String,mscorlib" });
bool IsValidated = Validate(myMsg.Body.ToString());
}
internal void Validate(string message)
{
//some logic
return false;
}
如您在接收代碼中所看到的,我正在接收回消息並驗證消息。在這里,我希望僅當IsValidated為true時才從隊列中刪除該消息,
基本上,我想防止自動刪除消息將來變為false,並且要在隊列中刪除該消息(如果已驗證)。
您能告訴我為實現該目標要進行哪些修改。
messageQueue.Formatter = new XmlMessageFormatter(
new Type[] { typeof(System.Xml.XmlElement) });
MessageEnumerator iter = messageQueue.GetMessageEnumerator2();
iter.Reset();
while (iter.MoveNext(new TimeSpan(1000)))
{
System.Messaging.Message msg = iter.Current;
msg.Formatter = new ActiveXMessageFormatter();
var reader = new StreamReader(msg.BodyStream);
var msgBody = reader.ReadToEnd();
}
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