如何執行兩次powershell調用？

Question

我能夠一次調用powershell結果，但是當我添加第二個命令來再次調用時，它會得到一個錯誤異常，我不能再次調用它，因爲它已經在早期調用過（pipeline.Invoke();）。當我需要執行第一個以獲得我需要使用的結果然後再次執行它時，如何使它工作？我已經試過pipeline.Dispose();和pipeline.Commands.Clear();他們不工作。

這裏C＃代碼，

protected void ButtonRequest_Click(object sender, EventArgs e) 
    { 
     HiddenName.Visible = false; 
     string str = ""; 
     string ipAddress = ""; 
     string name = ""; 
     var tbids = (List<string>)Session["tbids"]; 

     //create a powershell 
     Runspace runSpace = RunspaceFactory.CreateRunspace(); 
     runSpace.Open(); 

     RunspaceInvoke invoke = new RunspaceInvoke(); 

     Pipeline pipeline = runSpace.CreatePipeline(); 

     Command invokeScript = new Command("Invoke-Command"); 

     //Add powershell script file and arguments into scriptblock 
     ScriptBlock sb = invoke.Invoke(@"{D:\Scripts\Get-FreeAddress.ps1 '" + DropDownListContainer.SelectedValue + "' " + DropDownListIP.SelectedValue + "}")[0].BaseObject as ScriptBlock; 
     //ScriptBlock sb = invoke.Invoke("{" + PowerShellCodeBox.Text + "}")[0].BaseObject as ScriptBlock; 

     invokeScript.Parameters.Add("scriptBlock", sb); 

     invokeScript.Parameters.Add("computername", TextBoxServer.Text); 

     pipeline.Commands.Add(invokeScript); 

     Collection<PSObject> output = pipeline.Invoke(); 

     foreach(PSObject psObject in output) 
     { 
      ipAddress = ipAddress + psObject; 

      foreach (var id in tbids) 
      { 
       try 
       { 
        //str += Request[id] + "\r\n"; 
        name = Request[id]; 

        Command invokeScript2 = new Command("Invoke-Command"); 
        //Add powershell script file and arguments into scriptblock 
        ScriptBlock sb2 = invoke.Invoke(@"{D:\Scripts\Set-IPAddress.ps1 '" + ipAddress + "' " + name + "}")[0].BaseObject as ScriptBlock; 

        invokeScript2.Parameters.Add("scriptBlock", sb2); 

        invokeScript2.Parameters.Add("computername", TextBoxServer.Text); 

        pipeline.Commands.Add(invokeScript2); 

        pipeline.Invoke(); 
       } 
       catch 
       { 

       } 
      } 
     } 

Answer 1

要調用不同的，我已經見過。我認爲你的調用可以被簡化。

事情是這樣的：

通在：

@"{D:\Scripts\Get-FreeAddress.ps1 '" + DropDownListContainer.SelectedValue + "' " + DropDownListIP.SelectedValue + "}" 

進入這個：

private string RunPowerShellScript(string scriptText) 
{ 
    // create Powershell runspace 
    Runspace runspace = RunspaceFactory.CreateRunspace(); 
    // open it 
    runspace.Open(); 
    // create a pipeline and feed it the script text 
    Pipeline pipeline = runspace.CreatePipeline(); 
    pipeline.Commands.AddScript(scriptText); 
    // add an extra command to transform the script 
    // output objects into nicely formatted strings 
    // remove this line to get the actual objects 
    // that the script returns. For example, the script 
    // "Get-Process" returns a collection 
    // of System.Diagnostics.Process instances. 
    pipeline.Commands.Add("Out-String"); 
    // execute the script 
    Collection<PSObject> results = pipeline.Invoke(); 
    // close the runspace 
    runspace.Close(); 
    // convert the script result into a single string 

    StringBuilder stringBuilder = new StringBuilder(); 
    foreach (PSObject obj in results) 
    { 
     stringBuilder.AppendLine(obj.ToString()); 
    } 
    return stringBuilder.ToString(); 
}