定义一个公共类：
public class TaskPublic
{
public static TaskScheduler TaskScheduler;
public static Task BeginInvoke(Action action)
{
var task = new Task(action);
task.Start(TaskScheduler);
return task;
}
}
在界面中初始化TaskScheduler全局变量：
TaskPublic.TaskScheduler = TaskScheduler.FromCurrentSynchronizationContext();
使用方式：
TaskPublic.BeginInvoke(() =>
{
MessageBox.Show("Test");
});直接下载离线安装包即可：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace FeiyuIT
{
/// <summary>
/// 时间工具类
/// </summary>
public class DateTimeUtil
{
private static DateTime _dtStart = new DateTime(1970, 1, 1, 8, 0, 0);
/// <summary>
/// 获取时间戳
/// </summary>
public static string GetTimeStamp(DateTime dateTime)
{
return Convert.ToInt64(dateTime.Subtract(_dtStart).TotalMilliseconds).ToString();
}
/// <summary>
/// 根据时间戳获取时间
/// </summary>
public static DateTime TimeStampToDateTime(string timeStamp)
{
return _dtStart.AddMilliseconds(Convert.ToInt64(timeStamp));
}
/// <summary>
/// 根据时间戳获取时间
/// </summary>
public static DateTime TimeStampToDateTime(long timeStamp)
{
if (timeStamp > 0)
{
return _dtStart.AddMilliseconds(timeStamp);
}
return DateTime.MinValue;
}
/// <summary>
/// 日期文本转时间戳文本
/// </summary>
public static string DateStrToTSstr(string datetime)
{
return GetTimeStamp(DateTime.Parse(datetime));
}
}
}
/// <summary>
/// [颜色：16进制转成RGB]
/// </summary>
/// <param name="strColor">设置16进制颜色 [返回RGB]</param>
/// <returns></returns>
public static Color Hex16ToRgb(this string strHxColor)
{
try
{
if (strHxColor == null)
{
return System.Drawing.Color.FromArgb(0, 0, 0);
}
if (strHxColor.Length == 0)
{//如果为空
return System.Drawing.Color.FromArgb(0, 0, 0);//设为黑色
}
else
{//转换颜色
return System.Drawing.Color.FromArgb(System.Int32.Parse(strHxColor.Substring(1, 2),
System.Globalization.NumberStyles.AllowHexSpecifier),
System.Int32.Parse(strHxColor.Substring(3, 2), System.Globalization.NumberStyles.AllowHexSpecifier),
System.Int32.Parse(strHxColor.Substring(5, 2), System.Globalization.NumberStyles.AllowHexSpecifier));
}
}
catch
{//设为黑色
return System.Drawing.Color.FromArgb(0, 0, 0);
}
} /// <summary>
/// [颜色：RGB转成16进制]
/// </summary>
/// <param name="color">颜色</param>
/// <returns>十六进制值，如果参数为空，默认返回#000000</returns>
public static string ToHex16Str(this Color color)
{
if (color.IsEmpty)
return "#000000";
string R = Convert.ToString(color.R, 16);
if (R == "0")
R = "00";
string G = Convert.ToString(color.G, 16);
if (G == "0")
G = "00";
string B = Convert.ToString(color.B, 16);
if (B == "0")
B = "00";
string HexColor = "#" + R + G + B;
return HexColor.ToUpper();
}
/// <summary>
/// [颜色：RGB转成字符串]
/// </summary>
/// <param name="R">红 int</param>
/// <param name="G">绿 int</param>
/// <param name="B">蓝 int</param>
/// <returns></returns>
public static string RgbToStr(this Color color)
{
if (color.IsEmpty)
return "#000000";
return ColorTranslator.ToHtml(color);
}C# 字符串超长省略扩展函数
/// <summary>
/// 超长省略
/// </summary>
/// <param name="RawString"></param>
/// <param name="Length"></param>
/// <returns></returns>
public static string VeryLongOmit(this string RawString, int Length)
{
try
{
if (RawString == null)
{
return "";
}
if (RawString.Length <= Length)
{
return RawString;
}
else
{
for (Int32 i = RawString.Length - 1; i >= 0; i--)
{
if (System.Text.Encoding.GetEncoding("GB2312").GetByteCount(RawString.Substring(0, i)) < Length)
{
return RawString.Substring(0, i) + "...";
}
}
return "...";
}
}
catch (Exception)
{
return "";
}
}
"1234567890".VeryLongOmit(5)通过扩展Image对象方法从而实现设置图片为圆形
/// <summary>
/// 设置PictureBox为圆形
/// </summary>
/// <param name="img"></param>
public static Image GetPictureCircle(this Image image)
{
try
{
var img = (Image)image.Clone();
var rec = new Rectangle(0, 0, img.Width, img.Height);// 矩形
var size = new Size(img.Width, img.Height);// 大小
Bitmap bitmap = new Bitmap(size.Width, size.Height);// 位图
using (Graphics g = Graphics.FromImage(bitmap))// 图形
{
using (TextureBrush br = new TextureBrush(img, WrapMode.Tile, rec))// 纹理刷
{
// 尺度变换
br.ScaleTransform(bitmap.Width / (float)rec.Width, bitmap.Height / (float)rec.Height);
g.SmoothingMode = SmoothingMode.HighQuality;
// 填充椭圆
g.FillEllipse(br, new Rectangle(Point.Empty, size));
GC.Collect();
}
}
return bitmap;
}
catch (Exception)
{
return image;
}
}
调用
Image img = new Image();
img.GetPictureCircle();每个窗体对象中都默认包含了一个tag属性
在窗体构造函数中给tag属性赋值一个FrmTagEntity对象
通过下面的方法就可以实现只打开一个窗体
/// <summary>
/// 只显示一个对象窗口
/// </summary>
/// <param name="cskin"></param>
/// <remarks>
/// </remarks>
public static void ShowOne(this CCSkinMain cskin)
{
string className = cskin.GetType().Name;
foreach (Form f in Application.OpenForms)
{
var fClassName = f.GetType().Name;
if (fClassName == className)
{
if (f != null)
{
f.Visible = true;
f.Focus(); //打开过就让其获得焦点
return;
}
}
}
cskin.Show(); //重新new一个Show出来
}
/// <summary>
/// 只显示一个对象窗口
/// </summary>
/// <param name="cskin"></param>
/// <remarks>
/// </remarks>
public static void ShowOne(this Form form)
{
string className = form.GetType().Name;
foreach (Form f in Application.OpenForms)
{
var fClassName = f.GetType().Name;
if (fClassName == className)
{
if (f != null)
{
f.Visible = true;
f.Focus(); //打开过就让其获得焦点
return;
}
}
}
form.Show(); //重新new一个Show出来
} /// <summary>
/// 窗体通用对象实体
/// 用于窗体打开时的判断，并且可绑定相应的对象数据
/// </summary>
public class FrmTagEntity
{
/// <summary>
/// 通用标识，用于窗体id识别
/// 用户id、群id
/// </summary>
public int ID { get; set; }
/// <summary>
/// 通用绑定对象，用于窗体对象数据绑定
/// </summary>
public object Data { get; set; }
} var form = new FrmGoChatGroup(detailsGroup);
form.ShowOneTagID(); /// <summary>
/// 只显示一个Text相同的窗口
/// </summary>
/// <param name="cskin"></param>
/// <remarks>
/// </remarks>
public static void ShowOneTagID(this Form form)
{
string className = form.GetType().Name;
foreach (Form f in Application.OpenForms)
{
var fClassName = f.GetType().Name;
if (fClassName == className)
{
if (f != null)
{
if (f.Tag is FrmTagEntity && form.Tag is FrmTagEntity)
{
var fTagEntity = f.Tag as FrmTagEntity;
var frmTagEntity = form.Tag as FrmTagEntity;
if (fTagEntity.ID == frmTagEntity.ID)
{
f.Visible = true;
f.Focus(); //打开过就让其获得焦点
return;
}
}
}
}
}
form.Show(); //重新new一个Show出来
}
public partial class FrmGoChatGroup : CCSkinMain, ISkinHandle
{
public FrmGoChatGroup(DetailsGroupData groupDatas)
{
InitializeComponent();
this.Tag = new FrmTagEntity() { ID = groupDatas.groupId, Data = groupDatas };
}
} /// <summary>
/// 窗体通用对象实体
/// 用于窗体打开时的判断，并且可绑定相应的对象数据
/// </summary>
public class FrmTagEntity
{
/// <summary>
/// 通用标识，用于窗体id识别
/// 用户id、群id
/// </summary>
public int ID { get; set; }
/// <summary>
/// 通用绑定对象，用于窗体对象数据绑定
/// </summary>
public object Data { get; set; }
}