小编Nig*_*ce2的帖子

我仍然是C#的新手,与C/CPP相比,我很难习惯它.

如何在不退出程序的情况下退出C#上的函数,就像这个函数一样？

if (textBox1.Text == "" || textBox1.Text == String.Empty || textBox1.TextLength == 0)
    textBox3.Text += "[-] Listbox is Empty!!!!\r\n";
System.Environment.Exit(0);

这将不允许返回类型,如果单独留下它将继续通过未停止的函数继续.这是不可取的.

如何将图像添加到选项卡控件上的选项卡标签？

像这样:

但在正常的标签页上,如下所示:

我明白这样做你需要添加一个Imagelist并对要使用的图像做一个索引,但我没有找到任何在google上搜索的例子.有帮助吗？

我一直在尝试使用此代码在html/ajax中按类读取元素,因为知道GetElementByClass不是webBrowser.Document中的选项.我似乎无法获得返回值然后调用该成员.有没有解决这个问题？

参考: 按类名获取HTMLElements

例:

<span class="example">(<a href="http://www.test.com/folder/remote/api?=test" onclick=" return do_ajax('popup_fodder', 'remote/api?=test', 1, 1, 0, 0); return false; " class="example">test</a>)</span>

示例代码:

   HtmlElementCollection theElementCollection = default(HtmlElementCollection);
   theElementCollection = webBrowser1.Document.GetElementsByTagName("span");
   foreach (HtmlElement curElement in theElementCollection)
   {
        //If curElement.GetAttribute("class").ToString = "example"  It doesn't work.  
        // This should be the work around.
        if (curElement.OuterHtml.Contains("example"))
        {
            MessageBox.Show(curElement.GetAttribute("InnerText")); // Doesn't even fire.
            // InvokeMember(test) after class is found.
        }
    }

在尝试了一些错误检查方法后,我得出结论,我需要帮助解决这个问题.

我怎么没有发现这个"索引超出范围"的错误.在未来的良好实践中,我该怎么做才能避免这个问题？

    public void loadFromFile()
    {
        OpenFileDialog oFile = new OpenFileDialog();
        oFile.Title = "Open text file";
        oFile.Filter = "Text Files (*.txt)|*.txt|All Files (*.*)|*.*";
        oFile.FilterIndex = 1;
        oFile.InitialDirectory = Application.StartupPath;
        oFile.AddExtension = true;
        oFile.CheckFileExists = true;
        oFile.CheckPathExists = true;

        // Open and clean Duplicates
        String[] lines;
        List<string> temp = new List<string>();
        List<string> newlist = new List<string>();

        if(oFile.ShowDialog() == DialogResult.OK)
        {
            // Dummy file has 6 lines of text. Filename:DuplicatFile.txt
            // 3 duplicate lines and 3 not.
            lines = File.ReadAllLines(oFile.FileName, System.Text.Encoding.UTF8);

            // …

现在我将VB6项目移植到C#并继续收到此错误.似乎无法在命名空间中修复它.

问题:

//Expected class, delegate, enum, interface, or struct
public string GetHostByAddress(long addr)
{
    dynamic phe = null;
    dynamic Ret = null;
    HOSTENT heDestHost = default(HOSTENT);
    dynamic hostname = null;

    phe = gethostbyaddr(addr, 4, PF_INET);
    if (phe) {
        MemCopy(heDestHost, phe, hostent_size);
        hostname == new String[256, 0];
        MemCopy(hostname, heDestHost.h_name, 256);
        GetHostByAddress == Strings.Left(hostname, Strings.InStr(hostname, Strings.Chr(0)) - 1);
    } else {
        GetHostByAddress = WSA_NoName;
    }
}

原始方法看起来像这样.

Public Function GetHostByAddress(ByVal addr As Long) As String

  Dim phe&, Ret&
  Dim heDestHost As HOSTENT …