我如何添加一个int参数到我的textBox1更新方法

本文关键字：参数 我的 textBox1 新方法 更新 int 何添加 添加 一个 | 更新日期: 2023-09-27 18:18:39

In form1:

public MainWindow()
{
    InitializeComponent();
    Searcher searcher = new Searcher(this);
}
private delegate void NameCallBack(string varText, int varNumber);
public void UpdateTextBox(string input, int numberofdirsleft)
{
    if (InvokeRequired)
    {
        textBox1.BeginInvoke(new NameCallBack(UpdateTextBox), new object[] { input });
    }
    else
    {
        textBox1.Text = input;
    }
}

在新类中:

static MainWindow myform;
public Searcher(MainWindow form)
{
    myform = form;
}

在一个foreach的新类中:

if (m_pars.IncludeSubDirsChecked)
{
    DirectoryInfo[] subDirInfos = dirInfo.GetDirectories();
    int counter = subDirInfos.Length;
    foreach (DirectoryInfo subDirInfo in subDirInfos)
    {
        if (m_stop)
        {
            break;
        }
        // Recursion:
        SearchDirectory(subDirInfo);
        counter = counter - 1;
        myform.UpdateTextBox(subDirInfo.FullName,counter);
    }
}

如果在form1中，我正在删除int numberofdirsleft和int varNumber并仅使用字符串，则工作正常。同样在新类中不使用计数器变量。然后一切正常，我看到textBox1中的文本。

例如在textBox1我看到:

c: 'c: ' tempc: ' temp1…

但是现在我想在textBox1内的文本附近看到一个计数器:

26 c: '
25 c: ' temp
24 c:'temp1

但是我现在用我添加的int变量的方式它在program。cs中抛出了一个异常:

Application.Run(new MainWindow());

参数计数不匹配

System.Reflection.TargetParameterCountException was unhandled
      IsTransient=false
      Message=Parameter count mismatch.
      Source=mscorlib
      StackTrace:
           at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
           at System.Delegate.DynamicInvokeImpl(Object[] args)
           at System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry tme)
           at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)
           at System.Threading.ExecutionContext.runTryCode(Object userData)
           at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
           at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
           at System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)
           at System.Windows.Forms.Control.InvokeMarshaledCallbacks()
           at System.Windows.Forms.Control.WndProc(Message& m)
           at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
           at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
           at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
           at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
           at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
           at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
           at FileSearcher.Program.Main() in e:'filesearch'FileSearcher'FileSearcher'Program.cs:line 17
           at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
           at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
           at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
           at System.Threading.ThreadHelper.ThreadStart()
      InnerException:

我在foreach中首先看到的变量计数器是26然后在foreach中，我看到使用一个断点，计数器为1那么下一次在foreach计数器中的时间是26

我如何添加一个int参数到我的textBox1更新方法

变化:

public void UpdateTextBox(string input, int numberofdirsleft)
{
    if (InvokeRequired)
    {
        textBox1.BeginInvoke(new NameCallBack(UpdateTextBox), new object[] { input });
    }
    else
    {
        textBox1.Text = input;
    }
}

: 

public void UpdateTextBox(string input, int numberofdirsleft)
{
    if (InvokeRequired)
    {
        textBox1.BeginInvoke(new NameCallBack(UpdateTextBox), new object[] { input, numberofdirsleft });
    }
    else
    {
        textBox1.Text = numberofdirsleft.ToString() + " " + input;
    }
}

注意我是如何将这两个参数传递给对象数组的:

new object[] { input, numberofdirsleft }

然后在更新文本框值时使用这两个值。

你也可以这样做:

    public void UpdateTextBox(string input, int numberofdirsleft)
    {
        this.BeginInvoke((MethodInvoker)delegate {
            this.textBox1.Text = numberofdirsleft.ToString() + " " + input;
        });
    }
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