    public frmMain()
    {
        this.StartPosition = FormStartPosition.CenterScreen;//窗体居中显示  
        this.MaximizeBox = false;//不显示最大化按钮 
        this.FormBorderStyle = FormBorderStyle.FixedSingle;//禁止放大缩小 
        InitializeComponent();
    }

二、winform文本框全选功能

Control_ControlAdded事件在InitializeComponent()调用之前注册

    public frmMain()
    {
        this.ControlAdded += new System.Windows.Forms.ControlEventHandler(this.Control_ControlAdded);
        InitializeComponent();
    }
    private void Control_ControlAdded(object sender, ControlEventArgs e)
    {
        //使“未来”生效
        e.Control.ControlAdded += new System.Windows.Forms.ControlEventHandler(this.Control_ControlAdded);
        //使“子孙”生效
        foreach (Control c in e.Control.Controls)
        {
            Control_ControlAdded(sender, new ControlEventArgs(c));
        }
        //使“过去”生效
        TextBox textBox = e.Control as TextBox;
        if (textBox != null)
        {
            textBox.KeyPress += TextBox_KeyPress;
        }
    }
    private void TextBox_KeyPress(object sender, KeyPressEventArgs e)
    {
        TextBox textBox = sender as TextBox;
        if (textBox == null)
            return;
        if (e.KeyChar == (char)1)
        {
            textBox.SelectAll();
            e.Handled = true;
        }
    }

三、设置一个显示日志的文本框

首先在页面中放置一个文本框，设置Multiline=true后拖动到合适大小然后在加载事件中进行设置

private static int _maxLogmsgTextLength = 10000;//日志框最大输入
private void frmMain_Load(object sender, EventArgs e)
{
    this.txtLogMsg.Multiline = true;//多选， 一般在界面中就设置了
    this.txtLogMsg.ScrollBars = ScrollBars.Vertical;//日志输出显示纵向滚动条
    this.txtLogMsg.ReadOnly = true; //输出日志只读
    this.txtLogMsg.TextChanged += txtLogMsg_TextChanged;//注册改变事件
    int.TryParse(System.Configuration.ConfigurationManager.AppSettings["MAX_LOGMSG_TEXT_LENGTH"], out _maxLogmsgTextLength);//优先使用配置文件配置的值
}
//文本框事件 使追加日志后滚动光标到末尾
void txtLogMsg_TextChanged(object sender, EventArgs e)
{
    txtLogMsg.SelectionStart = txtLogMsg.Text.Length + 10;//设置选中文字的开始位置为文本框的文字的长度，如果超过了文本长度，则默认为文本的最后。
    txtLogMsg.SelectionLength = 0;//设置被选中文字的长度为0（将光标移动到文字最后）
    txtLogMsg.ScrollToCaret();//将滚动条移动到光标位置
}
//追加日志方法 在非UI线程中直接AppendText调试会异常
private void AppendLogMsg(string msg)
{
    //在UI线程中执行
    txtLogMsg.BeginInvoke(new Action(() =>
    {
        txtLogMsg.AppendText(msg);
        txtLogMsg.AppendText(Environment.NewLine);//追加换行符
    }));
}

四、开启一个线程执行任务

避免界面卡死

var askThread=new Thread(() =>
{
  //TODO
  //AppendLogMsg("添加日志,调试时不会报错~~~");
}
askThread.Start();
//.NET Framework 4.5+
//Task.Run(()=>{
//  //TODO
//})

五、打开图片选择对话框

默认为多选，返回选择的文件路径集合，可使用FirstOrDefault()方法判断是否选择了文件

private List<string> OpenImagesDialog(bool isMulti = true)
{
    var openFileDialog = new OpenFileDialog();
    const string imgExts = "图像文件 (*.bmp;*.ico;*.gif;*.jpeg;*.jpg;*.png)|*.bmp;*.ico;*.gif;*.jpeg;*.jpg;*.png";
    openFileDialog.Filter = imgExts;
    openFileDialog.Multiselect = isMulti;
    openFileDialog.RestoreDirectory = true;
    openFileDialog.FilterIndex = 1;
    var result = new List<string>();
    if (openFileDialog.ShowDialog() == DialogResult.OK)
    {
        result.AddRange(openFileDialog.FileNames);
    }
    return result;
}

六、复制文件到指定目录

将传递的文件复制到指定目录并以Guid重命名，目录不存在则自动创建使用元组返回对应路径键值对(Item1)及失败路径集合(Item2)

/// <summary>
/// 复制文件到指定目录并重命名
/// </summary>
/// <param name="sourcePaths">要复制的文件路径集合</param>
/// <param name="targetDir">目标目录</param>
/// <returns>Item1:对应路径，Item2:失败文件路径</returns>
public static Tuple<Dictionary<string, string>, List<string>> CopyFileToDir(List<string> sourcePaths, string targetDir)
{
    if (!Directory.Exists(targetDir))
    {
        Directory.CreateDirectory(targetDir);
    }
    var errorFiles = new List<string>();
    var saveDirs = new Dictionary<string, string>();
    sourcePaths.ForEach(item =>
    {
        //路径不存在或者路径已存在则失败
        if (!File.Exists(item) || saveDirs.ContainsKey(item))
        {
            errorFiles.Add(item);
        }
        else
        {
            var saveName = Guid.NewGuid() + Path.GetExtension(item);
            var savePath = Path.Combine(targetDir, saveName);
            File.Copy(item, savePath);
            saveDirs.Add(item, savePath);
        }
    });
    var result = new Tuple<Dictionary<string, string>, List<string>>(saveDirs, errorFiles);
    return result;
}

调用示例 ( AppendLogMsg 为追加日志方法)

var selectImgs = OpenImagesDialog(true);//五、打开图片选择对话框方法
var result = FileHelper.CopyFileToDir(selectImgs, txtSaveDir.Text);
result.Item1.Keys.ToList().ForEach(item => AppendLogMsg(item + ":" + result.Item1[item]));//成功时输出
result.Item2.ForEach(item => AppendLogMsg("文件复制失败：" + item));//文件错误输出

七、使用Ini文件存取配置

保存一些配置到ini文件，是自己的工具更佳灵活

ini操作类

public class IniHelper
{
    // 声明INI文件的写操作函数 WritePrivateProfileString()
    [System.Runtime.InteropServices.DllImport("kernel32")]
    private static extern long WritePrivateProfileString(string section, string key, string val, string filePath);

    // 声明INI文件的读操作函数 GetPrivateProfileString()
    [System.Runtime.InteropServices.DllImport("kernel32")]
    private static extern int GetPrivateProfileString(string section, string key, string def, System.Text.StringBuilder retVal, int size, string filePath);

    private readonly int _retLength = 500;
    private readonly string _sPath = null;
    /// <summary>
    /// 初始化IniHelper
    /// </summary>
    /// <param name="path">ini文件保存路径</param>
    /// <param name="rl">默认500</param>
    public IniHelper(string path, int? rl = null)
    {
        this._sPath = path;
        this._retLength = rl.HasValue ? rl.Value : _retLength;
    }
    /// <summary>
    /// 设置Ini配置，默认配置节为Setting
    /// </summary>
    /// <param name="key">键名</param>
    /// <param name="value">键值</param>
    /// <param name="section">配置节</param>
    public void WriteValue(string key, string value, string section = "Setting")
    {
        // section=配置节，key=键名，value=键值，path=路径
        WritePrivateProfileString(section, key, value, _sPath);
    }
    /// <summary>
    /// 根据键名节点读取Ini配置，默认节点为Setting
    /// </summary>
    /// <param name="key">键名</param>
    /// <param name="section">配置节</param>
    /// <returns></returns>
    public string ReadValue(string key, string section = "Setting")
    {
        // 每次从ini中读取多少字节
        System.Text.StringBuilder temp = new System.Text.StringBuilder(_retLength);
        // section=配置节，key=键名，temp=上面，path=路径
        GetPrivateProfileString(section, key, "", temp, _retLength, _sPath);
        return temp.ToString();
    }
}

IniHelper使用示例

string savePath = AppDomain.CurrentDomain.BaseDirectory + "config.ini";
IniHelper _iniHelper = new IniHelper(savePath);//初始化
_iniHelper.WriteValue("txtGitAddress");//写入
_iniHelper.ReadValue("txtGitAddress");//读取