C＃非常新，所以全局变量对我来说仍然是一个谜和问题。
我试图使用Combobox创建一个动态变量，但它并不像我试图抛出它的任何东西。
我希望有人看到我的错误并告诉我我做错了什么。
我尝试将if语句放在各个位置，例如按钮单击和SelectedIndexChanged，但仍无法正常工作。
当我点击我的按钮运行脚本时，它说它找不到文件，ScriptName变量表示它没有在任何地方使用。
using System;
using System.Text;
using System.Windows.Forms;
using System.Collections.ObjectModel;
using System.Management.Automation;
using System.Management.Automation.Runspaces;
using System.ComponentModel;
using System.Threading;
using System.IO;
namespace ServerStatusChecks
{
public partial class Form1 : Form
{
private BackgroundWorker bw = new BackgroundWorker();
public string ScriptName { get; set; }
static string RunScriptResult;
public Form1()
{
InitializeComponent();
bw.WorkerReportsProgress = true;
bw.WorkerSupportsCancellation = true;
bw.DoWork += new DoWorkEventHandler(bw_DoWork);
bw.RunWorkerCompleted += new RunWorkerCompletedEventHandler(bw_RunWorkerCompleted);
}
private string LoadScript(string filename)
{
try
{
// Create an instance of StreamReader to read from our file.
// The using statement also closes the StreamReader.
using (StreamReader sr = new StreamReader(filename))
{
// use a string builder to get all our lines from the file
StringBuilder fileContents = new StringBuilder();
// string to hold the current line
string curLine;
// loop through our file and read each line into our
// stringbuilder as we go along
while ((curLine = sr.ReadLine()) != null)
{
// read each line and MAKE SURE YOU ADD BACK THE
// LINEFEED THAT IT THE ReadLine() METHOD STRIPS OFF
fileContents.Append(curLine + "\n");
}
// call RunScript and pass in our file contents
// converted to a string
return fileContents.ToString();
}
}
catch (Exception e)
{
// Let the user know what went wrong.
string errorText = "The file could not be read:";
errorText += e.Message + "\n";
return errorText;
}
}
public void button1_Click(object sender, EventArgs e)
{
if (bw.IsBusy != true)
{
bw.RunWorkerAsync();
}
// run our script and put the result into our textbox
// NOTE: make sure to change the path to the correct location of your script
}
private void bw_DoWork(object sender, EventArgs e)
{
RunScriptResult = RunScript(LoadScript(ScriptName));
}
// Takes script text as input and runs it, then converts
// the results to a string to return to the user
private string RunScript(string scriptText)
{
get {
return ScriptName;
}
set {
if (comboBox1.SelectedIndex == 0)
{
string ScriptName = @"c:\utils\Script1.ps1";
}
if (comboBox1.SelectedIndex == 1)
{
string ScriptName = @"c:\utils\Script2.ps1";
}
if (comboBox1.SelectedIndex == 2)
{
string ScriptName = @"c:\utils\Script3.ps1";
}
}
// 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
pipeline.Dispose();
runspace.Close();
// convert the script result into a single string
StringBuilder stringBuilder = new StringBuilder();
foreach (PSObject obj in results)
{
stringBuilder.AppendLine(obj.ToString());
}
// return the results of the script that has
// now been converted to text
return stringBuilder.ToString();
}
// helper method that takes your script path, loads up the script
// into a variable, and passes the variable to the RunScript method
// that will then execute the contents
private void Form1_Load(object sender, EventArgs e)
{
DirectoryInfo dinfo = new DirectoryInfo(@"C:\utils");
FileInfo[] Files = dinfo.GetFiles("*.ps1");
foreach (FileInfo file in Files)
{
comboBox1.Items.Add(file.Name);
}
}
private void bw_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
textBox1.Text = RunScriptResult;
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
Thread.Sleep(1000);
}
private void label1_Click(object sender, EventArgs e)
{
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
}
}
}
编辑： 工作脚本
using System;
using System.Text;
using System.Windows.Forms;
using System.Collections.ObjectModel;
using System.Management.Automation;
using System.Management.Automation.Runspaces;
using System.ComponentModel;
using System.Threading;
using System.IO;
namespace ServerStatusChecks
{
public partial class Form1 : Form
{
private BackgroundWorker bw = new BackgroundWorker();
public string ScriptName { get; set; }
static string RunScriptResult;
public Form1()
{
InitializeComponent();
bw.WorkerReportsProgress = true;
bw.WorkerSupportsCancellation = true;
bw.DoWork += new DoWorkEventHandler(bw_DoWork);
bw.RunWorkerCompleted += new RunWorkerCompletedEventHandler(bw_RunWorkerCompleted);
}
public void button1_Click(object sender, EventArgs e)
{
if (bw.IsBusy != true)
{
bw.RunWorkerAsync();
}
// run our script and put the result into our textbox
// NOTE: make sure to change the path to the correct location of your script
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
switch (comboBox1.SelectedIndex)
{
case 1:
ScriptName = @"c:\utils\Script1.ps1";
break;
case 2:
ScriptName = @"c:\utils\Script2.ps1";
break;
default:
ScriptName = @"c:\utils\Script3.ps1";
break;
}
}
private void bw_DoWork(object sender, EventArgs e)
{
var loadScript = LoadScript(ScriptName);
if (string.IsNullOrWhiteSpace(loadScript)) return;
RunScriptResult = RunScript(loadScript);
}
private static string LoadScript(string filename)
{
if (!File.Exists(filename)) return "";
var fileContents = new StringBuilder();
var lines = File.ReadAllLines(filename);
foreach (var line in lines)
{
fileContents.Append(line + "\n");
}
return fileContents.ToString();
}
private static string RunScript(string scriptText)
{
//should start from this line
// create Powershell runspace
Runspace runspace = RunspaceFactory.CreateRunspace();
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
pipeline.Dispose();
runspace.Close();
StringBuilder stringBuilder = new StringBuilder();
foreach (PSObject obj in results)
{
stringBuilder.AppendLine(obj.ToString());
}
// return the results of the script that has
// now been converted to text
return stringBuilder.ToString();
}
// helper method that takes your script path, loads up the script
// into a variable, and passes the variable to the RunScript method
// that will then execute the contents
private void Form1_Load(object sender, EventArgs e)
{
DirectoryInfo dinfo = new DirectoryInfo(@"C:\utils");
FileInfo[] Files = dinfo.GetFiles("*.ps1");
foreach (FileInfo file in Files)
{
comboBox1.Items.Add(file.Name);
}
comboBox1.SelectedIndex = 0;
}
private void bw_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
textBox1.Text = RunScriptResult;
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
Thread.Sleep(1000);
}
}
}
答案 0 :(得分：0)
这就是我要做的事情：
此属性：
private string RunScript(string scriptText)不应该是财产。它应该是一种方法。从中删除get和set。并且，您可能需要制作static。此外，我不会使用与顶部属性相同的方法名称。
添加此逻辑：
if (comboBox1.SelectedIndex == 0)
{
ScriptName = @"c:\utils\Script1.ps1";
}
if (comboBox1.SelectedIndex == 1)
{
ScriptName = @"c:\utils\Script2.ps1";
}
if (comboBox1.SelectedIndex == 2)
{
ScriptName = @"c:\utils\Script3.ps1";
}
到comboBox1_SelectedIndexChanged。请注意，我删除了多个变量声明。您应该能够访问位于顶部的那个。
更改简单StreamReader的{{1}}这将返回文件中每一行的数组。如果你真的需要遍历每一行并附加File.ReadAllLines(ScriptName);，你也可以这样做。它使代码更简单。
所以，我的版本会是这样的：
\n其他一切都应该是相同的