C#中的几个简单技术点

创建xml对应的对象类

根节点，对应类名

[xmlroot("componentlog ")]

public class componentlog{

}

其他节点，对应属性名

[xmlelement("logcategory")]

public string logcategory { get; set; }

也可以对应集合(如果同一节点有多个的话)

[xmlelement("logcontent")]

public list<logcontent> logcontent { get; set; }

节点里的内容

[xmlattribute("content")]

public string content { get; set; }

 

xml文件：

<?xml version="1.0" encoding="utf-8"?>

<componentlog>

         <logcategory>sign</logcategory>

         <logcontent>

        <key>1</key>

        <contentcaption content="内容1" variablename=""/>

        <contentdetail content="内容2" variablename="" />

    </logcontent>

         <logcontent>

        <key>2</key>

        <contentcaption content="内容3" variablename=""/>

        <contentdetail content="内容4" variablename="" />

</logcontent>

</componentlog>

窗体中打开文件夹

folderbrowserdialog  folderbrowser = new  folderbrowserdialog();

    if (folderbrowser.showdialog() == dialogresult.ok)

    {

      txtfolderpath.text = folderbrowser.selectedpath;

     }

窗体中跨线程调用组件(控件)

        /// <param name="textbox">文本框</param>

        /// <param name="strtext">要显示的内容</param>

        private void showtext(textbox textbox, string strtext)

        {

            if (this.invokerequired)

            {

                this.invoke((methodinvoker)delegate () { showtext(textbox, strtext+"\r\n"); });

            }

            else

            {

                textbox.text += datetime.now + "   " + strtext+"\r\n";

            }

        }

关闭窗口，退出所有进程

        private void form1_formclosed(object sender, formclosedeventargs e)

        {

            system.environment.exit(0);

        }

将文本框的滚动条一直处于最低端

        private void txtreceive_textchanged(object sender, eventargs e)

        {

            txtreceive.selectionstart = txtreceive.text.length;

            txtreceive.scrolltocaret();

        }

连接字符串

//str1不为空，就将str1和“ ”连接

string journalstring = str1 != string.empty ? string.concat(str1, " ") : string.empty;

获得程序运行目录下指定文件的路径

string xmlpath = path.combine(appdomain.currentdomain.basedirectory, "journallog\\123.xml");

获取指定的编码格式

encoding gb2312 = encoding.getencoding("gb2312");

按照指定编码格式读取文本内容

string strread = file.readalltext(xmlpath,encoding.default);

按照指定编码格式转换已经读取到的文本内容

//sendbyte是字节，将其转换成string

string  strsenddata = gb2312.getstring(sendbyte); 

或者string  strsenddata = encoding.utf8.getstring(sendbyte);