Collected C # common class code

// -- Method
Using system;
Using system. Data;
Using system. configuration;
Using system. Web;
Using system. Web. Security;
Using system. Web. UI;
Using system. Web. UI. webcontrols;
Using system. Web. UI. webcontrols. webparts;
Using system. Web. UI. htmlcontrols;
Using system. text;
Using system. Globalization;
Using system. Text. regularexpressions;
Using system. IO;

/// <Summary>
/// Indicates a common method on the web, such as displaying the prompt information, retrieving the date, and logging logs.
/// </Summary>
Public class Webcom
{
Public Webcom ()
{

}
/// <Summary>
/// Display the alert message box of JavaScript, and export the message box
/// </Summary>
/// <Param name = "orgpage"> </param>
/// <Param name = "strmessage"> </param>
Public static void showjsmessage (page orgpage, string strmessage)
{
Random random = new random ();
String strkey = "_ showmessage" + random. Next (10000). tostring () + "()";
If (orgpage. clientscript. isstartupscriptregistered (strkey ))
{
Strkey = "_ showmessage" + random. Next (10000). tostring () + "()";
}
String strscript = "<script language = \" javascript \ "> \ n \ r" +
"Alert (\" "+ strmessage. Replace (" \ r ", convert. tostring (13). Replace (" \ n ", convert. tostring (10 ))

+ "\") \ N \ r "+" </SCRIPT> \ n \ r ";
Type cstype = orgpage. GetType ();
Orgpage. clientscript. registerstartupscript (cstype, strkey, strscript );
}
/// <Summary>
/// Display the Javascript message box and publish the message box
/// </Summary>
/// <Param name = "orgpage"> </param>
/// <Param name = "errormessage"> </param>
/// <Param name = "messheight"> </param>
/// <Param name = "messwidth"> </param>
Public static void showjsmessage (page orgpage, string errormessage, int messheight, int messwidth)
{
Random random = new random ();
String strkey = "_ showerrormessage" + random. Next (10000). tostring () + "()";
If (orgpage. clientscript. isstartupscriptregistered (strkey ))
{
Strkey = "_ showerrormessage" + random. Next (10000). tostring () + "()";
}
String strscript = "<script language = \" javascript \ "> \ n \ r" +
"$ (Document). Ready (showerrormessage); \ n \ r" +
"Function showerrormessage ()" +
"{\ N \ r" +
"Showmessagebox (\" "+ errormessage. Replace (" \ r ", convert. tostring (13). Replace (" \ n ", convert. tostring (10 ))

+ "\", "+ Messwidth +", "+ messheight +") \ n \ r "+"} \ n \ r </SCRIPT> \ n \ r ";
Type cstype = orgpage. GetType ();
Orgpage. clientscript. registerstartupscript (cstype, strkey, strscript );

}
/// <Summary>
/// Give the system prompt
/// </Summary>
/// <Param name = "verrormessage"> </param>
/// <Returns> </returns>
Public static string showsystemtip (string verrormessage)
{
Stringbuilder errormessage = new stringbuilder ();
Errormessage. Length = 0;
Errormessage. append ("<Div style = \" padding: 20px; width: 200px; height: 150px \ "> <Div class = \" X-Box-blue \ "> <Div class = \" X-Box-Tl \ "> <Div class = \" X- box-tr \ "> <Div class = \" X-Box-TC \ "> </div> ");
Errormessage. append ("<Div class = \" X-Box-mL \ "> <Div class = \" X-Box-Mr \ "> <Div class = \" X-Box -MC \ "> ");
Errormessage. append ("Errormessage. append ("</div> ");
Errormessage. append ("<Div class = \" X-Box-BL \ "> <Div class = \" X-Box-Br \ "> ");
Errormessage. append ("<Div class = \" X-Box-BC \ "> </div> ");
Errormessage. append ("</div> ");
Return errormessage. tostring ();
}
/// <Summary>
/// Give the system prompt information and specify the recipient of the information
/// </Summary>
/// <Param name = "vtip"> </param>
/// <Param name = "vheight"> </param>
/// <Param name = "vwidth"> </param>
/// <Returns> </returns>
Public static string showsystemtip (string vtip, int vheight, int vwidth)
{
Stringbuilder errormessage = new stringbuilder ();
Errormessage. Length = 0;
Errormessage. append ("<Div style = 'padding: 20px; '> <Div style = 'width:" + vwidth + "PX; 'class = 'main-Div '> <Div class = 'main-top-left'> <Div class = 'main-top-Right'> <Div class = 'main- top-headers> system prompt information </div> ");
Errormessage. append ("<Div class = 'main-middle-left'> <Div class = 'main-middle-Right'> <Div class = 'main-content-border'> <div class = 'main-content' style = 'height: "+ vheight +" PX; padding: 5px; font-size: 11pt; color: red'> ");
Errormessage. append (vtip );
Errormessage. append ("</div> <Div class = 'main-bottom-left'> <Div class = 'main-bottom- right '> <Div class = 'main-bottom-middle'> </div> ");
Return errormessage. tostring ();
}
/// <Summary>
/// Encrypted characters to prevent leakage of sensitive information.
/// </Summary>
/// <Param name = "S"> </param>
/// <Returns> </returns>
Public static string encodebase (string S)
{
String strresult = "";
If (s! = "" & S! = NULL)
{
Strresult = convert. tobase64string (system. Text. asciiencoding. Default. getbytes (s ));
}
Return strresult;
}

/// <Summary>
/// Decrypt characters to prevent leakage of sensitive information.
/// </Summary>
/// <Param name = "S"> </param>
/// <Returns> </returns>
Public static string decodebase (string S)
{
String strresult = "";
If (s! = "" & S! = NULL)
{
Strresult = system. Text. asciiencoding. Default. getstring (convert. frombase64string (s ));
}
Return strresult;
}

/// <Summary>
/// The root week is the first day of the week.
/// </Summary>
/// <Param name = "weekid"> </param>
/// <Returns> </returns>
Public static string getweekfirstday (string weekid)
{
Int year = int. parse (weekid. substring (0, 4 ));
Datetime newyearday = new datetime (year, 1, 1 );
Int firstweekfirstday = convert. toint32 (newyearday. dayofweek );
Int days = (INT) (7-firstweekfirstday );
Datetime secondweekfirstday = newyearday. adddays (days );
Int week = int. parse (weekid. substring (4, 2 ));
String firstdate = secondweekfirstday. adddays (week-2) * 7). tostring ("yyyy-mm-dd ");
Return firstdate;
}

/// <Summary>
/// The root week is the last day of the week.
/// </Summary>
/// <Param name = "weekid"> </param>
/// <Returns> </returns>
Public static string getweeklastday (string weekid)
{
Int year = int. parse (weekid. substring (0, 4 ));
Datetime newyearday = new datetime (year, 1, 1 );
Int firstweekfirstday = convert. toint32 (newyearday. dayofweek );
Int days = (INT) (7-firstweekfirstday );
Datetime secondweekfisrtday = newyearday. adddays (days );
Int week = int. parse (weekid. substring (4, 2 ));
String lastdate = secondweekfisrtday. adddays (week-2) * 7 + 6). tostring ("yyyy-mm-dd ");
Return lastdate;
}

/// <Summary>
///
/// </Summary>
/// <Param name = "weekid"> </param>
/// <Returns> </returns>
Public static string [] getweekrange (string weekid)
{
String [] day = new string [7];
Int year = int. parse (weekid. substring (0, 4 ));
Datetime newyearday = new datetime (year, 1, 1 );
Int firstweekfirstday = convert. toint32 (newyearday. dayofweek );
Int days = (INT) (7-firstweekfirstday );
Datetime secondweekfisrtday = newyearday. adddays (days );
Int week = int. parse (weekid. substring (4, 2 ));
Datetime firstdate = secondweekfisrtday. adddays (week-2) * 7 );
Datetime lastdate = secondweekfisrtday. adddays (week-2) * 7 + 6 );
Day [0] = firstdate. tostring ("yyyy-mm-dd ");
For (INT I = 1; I <= 5; I ++)
{
Day [I] = firstdate. adddays (I). tostring ("yyyy-mm-dd ");
}
Day [6] = lastdate. tostring ("yyyy-mm-dd ");
Return day;
}

/// <Summary>
/// Returns the week for the root token date
/// </Summary>
/// <Param name = "DT"> </param>
/// <Returns> </returns>
Public static string getweekofyear (datetime DT)
{
Cultureinfo CI = cultureinfo. currentculture;
System. Globalization. Calendar calendar = CI. calendar;
Calendarweekrule rule = CI. datetimeformat. calendarweekrule;
Dayofweek Dow = CI. datetimeformat. firstdayofweek;
Int week = calendar. getweekofyear (DT, rule, Dow );
String weekid = DT. Year + week. tostring ("00 ");
Return weekid;
}
/// <Summary>
/// Determine whether to merge the entire data into the regular table
/// </Summary>
/// <Param name = "Validate"> </param>
/// <Returns> </returns>
Public static bool checkvalidate (string validate)
{
RegEx Re = new RegEx (@ "^ [0-9] + $"); // formula of the positive table

If (! Re. ismatch (validate ))
{
Return false;
}
Else
{
Return true;
}
}
/// <Summary>
/// Producer letter
/// </Summary>
/// <Returns> </returns>
Public static string randomnalpha (int I)
{
String oristr = "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstyuwxyz ";
String restr = "";
Random RD = new random ();
For (int K = 0; k <I; k ++)
{
Restr + = oristr [RD. Next (0, oristr. Length)]. tostring ();
}
Return restr;
}
/// <Summary>
/// Inject information into the log file
/// </Summary>
/// <Param name = "textcontent"> log content </param>
/// <Param name = "path"> file path </param>
Public static void writelog (string textcontent, string path)
{
If (! File. exists (PATH ))
{
Using (streamwriter writer = file. createtext (PATH ))
{
Writer. writeline (textcontent + "\ n ");
Writer. Close ();
// String log_source = configurationmanager. receivettings ["Event Log source"];
// System. Diagnostics. EventLog. writeentry (log_source, textcontent, system. Diagnostics. eventlogentrytype. Error );

}
}
Else
{
Using (streamwriter writer2 = file. appendtext (PATH ))
{
Try
{
Writer2.writeline (textcontent + "\ n ");
Writer2.close ();
}
Catch
{

}
}
}
}
/// <Summary>
/// Character Truncation
/// <Para> </para>
/// <Para> C # encoding uses Unicode 16 (ucs2) encoding, which cannot be processed. </para>
///
/// </Summary>
/// <Param name = "oristring"> </param>
/// <Param name = "length"> </param>
/// <Returns> </returns>
Public static string substr (string oristring, int length)
{
Byte [] bytes = system. Text. encoding. Unicode. getbytes (oristring );
Int n = 0;
Int I = 0;
For (; I <bytes. getlength (0) & n <length; I ++)
{
If (I % 2 = 0)
{
N ++;
}
Else
{
If (Bytes [I]> 0)
{
N ++;
}
}
}
If (I % 2 = 1)
{
If (Bytes [I]> 0)

I = I-1;
Else
I = I + 1;
}
Return System. Text. encoding. Unicode. getstring (bytes, 0, I );

}

}