C#项目开发小记
//抓包工具
SmartSniff 1.77
////------------#region 截图
private void toolStripButton6_Click(object sender, EventArgs e)
{
ScreenForm screen = new ScreenForm();
screen.copytoFather += new CbRectangle(copytoTextBox);
screen.ShowDialog();
}
/*截图后续操作*/
public void copytoTextBox(Rectangle rec)
{
Rectangle rec2 = rec; //改造一下，去掉红色边框
if (rec.Width > 2 && rec.Height > 2)
rec2 = new Rectangle(rec.X + 1, rec.Y + 1, rec.Width - 2, rec.Height - 2);
Rectangle r = Screen.PrimaryScreen.Bounds;
Image img = new Bitmap(rec2.Width, rec2.Height);
Graphics g = Graphics.FromImage(img);
g.CopyFromScreen(rec2.Location, new Point(0, 0), rec2.Size);
Clipboard.SetDataObject(img, false);
this.exRichTextBox_send.Paste();
}
#endregion
//--------------------------------progressBar
public void SetProgress(int total, int transmitted)
{
if (this.InvokeRequired)
{
object[] args = { total, transmitted };
this.Invoke(new CbSetProgress(this.SetProgress) ,args) ;
}
else
{
this.progressBar1.Maximum = total;
this.progressBar1.Value = transmitted;
string str = ((double)transmitted*100/total).ToString();
if (str.Length > 4)
{
this.label_percent.Text = str.Substring(0, 4) + "%";
}
else
{
this.label_percent.Text = str + "%";
}
if (this.progressBar1.Value == 0)
{
this.lastDisplaySpeedTime = DateTime.Now;
this.lastTransmitted = transmitted;
}
else
{
DateTime now = DateTime.Now;
TimeSpan span = now - this.lastDisplaySpeedTime;
if (span.TotalSeconds >= 1)
{
string unit = "K/s";
double speed = (transmitted - this.lastTransmitted) / 1000;
if (speed > 1000)
{
unit = "M/s";
speed = (int)speed / 10;
speed /= 100.0;
}
this.label_speed.Text = speed.ToString() + unit;
int leftSecs = (total - transmitted) / (transmitted - this.lastTransmitted);
int hour = leftSecs / 3600;
int min = (leftSecs % 3600) / 60;
int sec = ((leftSecs % 3600) % 60) % 60;
this.label_leftTime.Text = string.Format("{0}:{1}:{2}", hour.ToString("00"), min.ToString("00"), sec.ToString("00"));
this.lastDisplaySpeedTime = now;
this.lastTransmitted = transmitted;
}
}
}
}
--------------------------//自定义泛型
public class CustomList<T>:List<T> where T:class,IEnumerable
{
}
--------------------------文件流读写操作------------------------------
string path = Path.Combine(Application.StartupPath, "3.txt");
//using (FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read))
//{
// using (StreamReader sr = new StreamReader(fs, Encoding.Default))
// {
// this.textBox1.Text=sr.ReadToEnd();
// }
//}
using (FileStream fs = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.Write))
{
using (StreamWriter sr = new StreamWriter(fs, Encoding.UTF8))
{
sr.WriteLine("的事发生大富大上的fdfsdafjds fdsfj234234234");
}
}
----------------------接口映射-----------------------------
public class Man : IFlay, IRun
{
public string Flay(string name)
{
return name + ",飞！";
}
public string Run(string name)
{
return name + ",跑！";
}
}
public interface IRun
{
string Run(string name);
}
public interface IFlay
{
string Flay(string name);
}
Man ma = new Man();
if (ma is IFlay)
{
IFlay iFlay = ma as IFlay;//接口映射
this.textBox1.Text=iFlay.Flay("人");
}
-------------------------------枚举类型作为下列列表或入泛型方法-------------------------------
public static List<KeyValuePair<string, int>> GetKeyValuePairFromEnum<T>() where T : struct, IConvertible
{
List<KeyValuePair<string, int>> result = new List<KeyValuePair<string, int>>();
IEnumerable<T> array = Enum.GetValues(typeof(T)).Cast<T>();
foreach (T item in array)
{
string name = item.ToString();
int value = (int)Enum.Parse(typeof(T), name);
KeyValuePair<string, int> pair = new KeyValuePair<string, int>(name, value);
result.Add(pair);
}
return result;
}
----------------------【装载】返回集合使用IEnumerable<>还是IList<>----------------------------------
这里要看你的具体需求,一般分为以下几种可能性:
1.如果你返回的集合是只用于遍历,不可修改的,则返回IEnumerable<T>
2.如果返回的集合需要修改,如添加和删除元素,用ICollection<T>
3.如果返回的集合需要支持排序,索引等,用IList<T>
4.如果返回的集合要支持索引,但不能添加,删除元素,用ReadOnlyCollection<T>
----------------------整型数组转换字符串---------------------
string str = null;
int[] intArray = { 1, 2, 3, 4, 5, 6 };
str = string.Join("|", Array.ConvertAll<int, string>(intArray,
delegate(int i)
{
return i.ToString();
}));
-------------------------http同步下载---------------------------
public static void DownLoadFileFromUrl(string url, string saveFilePath)
{
FileStream stream = new FileStream(saveFilePath, FileMode.Create, FileAccess.Write);
WebRequest request = WebRequest.Create(url);
try
{
WebResponse response = request.GetResponse();
int contentLength = (int) response.ContentLength;
byte[] buffer = new byte[1024];
int count = 0;
int num3 = 0;
bool flag = false;
while (!flag)
{
count = response.GetResponseStream().Read(buffer, 0, buffer.Length);
if (count > 0)
{
stream.Write(buffer, 0, count);
num3 += count;
}
else
{
flag = true;
}
}
stream.Flush();
}
finally
{
stream.Close();
request = null;
}
}
-------------------------http异步下载---------------------------
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
//request.Method = WebRequestMethods.Http.Get
request.BeginGetResponse(new AsyncCallback((IAsyncResult result) =>
{
HttpWebRequest httpWebRequest = (HttpWebRequest)result.AsyncState;
using (HttpWebResponse response = (HttpWebResponse)httpWebRequest.EndGetResponse(result))
{
if (response.StatusCode == HttpStatusCode.OK)
{
string path = Path.Combine(Application.StartupPath, "1.jpg");
using (FileStream writeStream = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.Write))
{
using (Stream readStream = response.GetResponseStream())
{
int blockLength = 256 * 1024;
byte[] byteBuffer = new byte[256 * 1024];
int readLength = 0;
while ((readLength = readStream.Read(byteBuffer, 0, blockLength)) > 0)
{
writeStream.Write(byteBuffer, 0, readLength);
System.Threading.Thread.Sleep(10);
}
}
}
}
}
}), request);
-------------------------遍历枚举类型值及文本---------------------------
enum Color
{
Red=0,
Green,
Blue,
Orange
}
文本：
string[] eArray = Enum.GetNames(typeof(Color));
foreach (string t in eArray)
{
eText += t + " ";
}
值：
string eValue = string.Empty;
foreach (Color i in Enum.GetValues(typeof(Color)))
{
eValue += ((int)i).ToString() + " ";
}
--------------------------------C#队列基本操作--------------------------------------
List<UserInfo> userList = new List<UserInfo>
{
new UserInfo{Id=1,UserName="dd1",UserPwd="11"},
new UserInfo{Id=2,UserName="dd2",UserPwd="22"},
new UserInfo{Id=3,UserName="dd3",UserPwd="33"},
new UserInfo{Id=4,UserName="dd4",UserPwd="44"},
new UserInfo{Id=5,UserName="dd5",UserPwd="55"},
new UserInfo{Id=6,UserName="dd6",UserPwd="66"},
new UserInfo{Id=7,UserName="dd7",UserPwd="77"}
};
IEnumerable<UserInfo> ulst = new List<UserInfo>
{
new UserInfo{Id=8,UserName="dd8",UserPwd="88"},
new UserInfo{Id=9,UserName="dd9",UserPwd="99"},
new UserInfo{Id=10,UserName="dd10",UserPwd="1010"},
new UserInfo{Id=11,UserName="dd11",UserPwd="1111"}
};
int length = userList.Count;
length = length + 4;
//Queue<UserInfo> qu = new Queue<UserInfo>(length);
Queue<UserInfo> qu = new Queue<UserInfo>(ulst);
foreach (UserInfo user in userList)
{
qu.Enqueue(user);//入队
}
for (int i = 0; i < length;i++)
{
UserInfo u = qu.Dequeue();//出队
this.textBox1.Text +=length+" "+ u.Id + System.Environment.NewLine;
}
-------------------------------常用的集合类和由这些类实现的集合接口----------------------------------
- 集合及其实现的接口一览
下面罗列出来较为常用的集合类和由这些类实现的集合接口：
|
集合类 |
集合接口 |
|
ArrayList |
IList, ICollection,IEnumerable |
|
Queue |
ICollection,IEnumerable |
|
Stack |
ICollection,IEnumerable |
|
BitArray |
ICollection,IEnumerable |
|
Hashtable |
IDictionary,ICollection,IEnumerable |
|
SortedList |
IDictionary,ICollection,IEnumerable |
|
List<T> |
IList<T>,ICollection<T>,IEnumerable<T>,IList,ICollection,IEnumerable |
|
Queue<T> |
IEnumerable<T>,ICollection,IEnumerable |
|
Stack<T> |
IEnumerable<T>,ICollection,IEnumerable |
|
LinkedList<T> |
IEnumerable<T>,ICollection<T>,ICollection,IEnumerable |
|
HashSet<T> |
IEnumerable<T>,ICollection<T>,IEnumerable |
|
Dictionary<TKey, TValue> |
IDictionary<TKey, TValue>, ICollection<KeyValuePair<TKey, TValue>>, IEnumerable<KeyValuePair<TKey, TValue>>, IDictionary,ICollection,IEnumerable |
|
SortedDictionary<TKey, TValue> |
IDictionary<TKey, TValue>, ICollection<KeyValuePair<TKey, TValue>>, IEnumerable<KeyValuePair<TKey, TValue>>, IDictionary,ICollection,IEnumerable |
|
SortedList<TKey, TValue> |
IDictionary<TKey, TValue>, ICollection<KeyValuePair<TKey, TValue>>, IEnumerable<KeyValuePair<TKey, TValue>>, IDictionary,ICollection,IEnumerable |
|
Lookup<TKey, TElement> |
LKoopup<TKey, TElement>, IEnumerable<IGrouping<TKey, TElemet>>,IEnumerable |
-----------------------遍历Form应用程序目录--------------------------
string directory = System.IO.Directory.GetParent(System.Windows.Forms.Application.ExecutablePath).FullName;
this.addinManagement.LoadAllAddins(directory, true);
foreach (IAddin addin in this.addinManagement.AddinList)
{
IPassiveAddin passiveAddin = addin as IPassiveAddin;
if (passiveAddin != null)
{
ToolStripItem item = new ToolStripMenuItem(passiveAddin.ServiceName, null, new EventHandler(this.OnAddinMenuClicked));
item.Tag = passiveAddin;
this.lIToolStripMenuItem_addin.DropDownItems.Add(item);
this.xImageListBox1.AddItem(passiveAddin.ServiceName, 6, passiveAddin);
}
}
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