我想在C#中异步执行Power
shell脚本.我已经使用了BeginInvoke方法,但即使我为它们附加了委托,我也无法得到输出/错误.这是我的C#代码:
using(ps=PowerShell.Create()) { PSDataCollection<PSObject> output=new PSDataCollection<PSObject>(); output.DataAdded+=output_DataAdded; ps.AddScript(renewalScript); securestring ss = new securestring(); for (int i = 0; i < Password.Length; i++) ss.AppendChar(Password.ElementAt(i)); PSCredential cred = new PSCredential(Username,ss); ps.AddParameter("Credential",cred); ps.AddParameter("BuildServer",Server); ps.AddParameter("CAServer",CAServer); ps.AddParameter("CAName",CAName); ps.Streams.Error.DataAdded += Error_DataAdded; var result=ps.BeginInvoke<PSObject,PSObject>(null,output); } void output_DataAdded(object sender,DataAddedEventArgs e) { //display output in UI } void Error_DataAdded(object sender,DataAddedEventArgs e) { //display error message in UI }
我的脚本中有多个Write-Output语句.但是,从不触发DataAdded方法.但是当我使用同步Invoke方法时会触发它们.
解决方法
See this answer. 要实际异步运行它,您还需要使方法异步. 您可以通过调用Task.Factory.FromAsync(…)来获取任务< PSObject>对于异步操作,然后使用await.