I haven't sent any code for a long time. I want to send some C # code today.

// 2005-3-17 // <summary> // progress information processing Commission // </Summary> /// <Param name = "completedstep" type = "int"> Number of completed steps </param> // <Param name = "totalstep" type = "int"> total number of steps </param> Public Delegate void progresshandler (INT completedstep, int totalstep ); /// <summary> /// universal function set /// </Summary> public class yyfcommon {// <summary> /// send data to the specified URL using the POST method, this function does not handle errors /// </Summary> /// <Param name = "strurl"> URL string </PA Ram> /// <Param name = "bytsend"> binary data to be sent </param> /// <Param name = "sendprogress"> process the progress of data sending </param> /// <Param name = "acceptprogress"> progress when receiving data </param> /// <returns> received binary data </returns> Public static byte [] httppostdata (string strurl, byte [] bytsend, progresshandler sendprogress, progresshandler acceptprogress) {// send data system. net. httpwebrequest myreq = (system. net. httpwebrequest) system. net. webrequest. CRES Ate (strurl); myreq. method = "Post"; system. Io. Stream mystream = myreq. getrequeststream (); int icount = 0; If (sendprogress! = NULL) sendprogress (0, bytsend. length); While (icount <bytsend. length) {If (icount + 1024> bytsend. length) {mystream. write (bytsend, icount, bytsend. length-icount); icount = bytsend. length;} else {mystream. write (bytsend, icount, 1024); icount + = 1024;} If (sendprogress! = NULL) sendprogress (icount, bytsend. Length);} // whileif (sendprogress! = NULL) sendprogress (bytsend. length, bytsend. length); mystream. close (); // accept the data system. net. httpwebresponse Myres = NULL; Myres = myreq. getresponse () as system. net. httpwebresponse; mystream = Myres. getresponsestream (); system. io. memorystream mybuf = new system. io. memorystream (1024); byte [] bytbuf = new byte [1024]; int contentlength = (INT) Myres. contentlength; int acceptlength = 0; If (acceptprogress! = NULL) acceptprogress (0, contentlength); While (true) {int ilen = mystream. read (bytbuf, 0,1024); If (ilen = 0) break; mybuf. write (bytbuf, 0, ilen); acceptlength + = ilen; If (acceptlength> contentlength) contentlength = acceptlength; If (acceptprogress! = NULL) acceptprogress (acceptlength, contentlength);} // whileif (acceptprogress! = NULL) acceptprogress (acceptlength, contentlength); mystream. close (); Myres. close (); myreq. abort (); byte [] bytreturn = mybuf. toarray (); mybuf. close (); Return bytreturn;} // public static byte [] httppostdata () /// <summary> /// modify the string according to the data source parameter saved in the list /// </Summary> /// <Param name = "strtext"> for processing original string </param> /// <Param name = "strhead"> tagged header string </param> /// <Param name = "strend"> tagged tail string </param> // <Param name = "Myke YS "> Save the list of all parameters </param> // <returns> processed string </returns> Public static string fixvariablestring (string strtext, string strhead, string strend, system. collections. hashtable mykeys) {// exit the function if (strtext = NULL | strhead = NULL | strend = NULL | strhead. length = 0 | strend. length = 0 | strtext. length = 0 | mykeys = NULL | mykeys. count = 0) return strtext; int Index = strtext. indexof (St Rhead); // exit the function if (index <0) return strtext; string strkey; int index2; int lastindex = 0; system. text. stringbuilder mystr = new system. text. stringbuilder (); do {// find the sub-string with the "[content]" style // if the "[" and "]" character pairs are not found, exit the loop index2 = strtext. indexof (strend, index + 1); If (index2> index) {// if the "[" symbol is followed by the "]" symbol, the "[]" character pair // corrects the search result to ensure that "[]" character pairs do not contain characters "[ "int index3 = index; do {Index = index3; index3 = Str Text. indexof (strhead, index3 + 1);} while (index3> index & index3 <index2); // obtain the character-to-pair substring, the sub-string is the parameter name // If the parameter name is valid, the parameter value is output to the output result // otherwise, no additional processing strkey = strtext is performed. substring (index + strhead. length, index2-index-strhead. length); If (mykeys. containskey (strkey) {If (lastindex <index) {mystr. append (strtext. substring (lastindex, index-lastindex);} mystr. append (mykeys [strkey] as string); Index = index 2 + strend. length; lastindex = index;} elseindex = index2 + strend. length;} else {break;} while (index >=0 & index <strtext. length); // Add the remaining string if (lastindex <strtext. length) mystr. append (strtext. substring (lastindex); Return mystr. tostring ();} // end of function: fixvariablestring /// <summary> /// calculate the drag and drop control rectangle of the specified rectangle /// </Summary> /// <Param name = "myrect"> area of the primary rectangle </ param> // <Param name = "dragrectsize"> Drag the rectangle </param> /// <Param name = "innerdragrect"> whether the rectangle is inside the main rectangle, if the value is false, drag the rectangle to turn out. </param> /// <remarks> // drag the rectangle to display the user interface, there are a total of eight control points between the four vertices in a rectangle and the middle point in the border. // you can drag the eight control points to change the position and size of the rectangle, these control points can be located inside the area, /// you can also drag eight rectangles to the outside of the area, numbers from 0 to 7, respectively. // <PRE> // drag the rectangle inside. // ┌ ── ─ ┐ // │ ■ 0 1 ■ 2 ■ │ // │ ■ 7 3 ■ │ /// │ // │ ■ 6 5 ■ 4 ■ │ // └ ── ─ /// /// Drag a rectangle to the canvas // ■ // ┌ ── ─ ── ┐ // │ 0 1 2 │ // /│ // ■ │ 7 3 │ ■ // │ /// │ // │ 6 5 4 │ // └ ── ─ ┘ // ■ // </PRE> // </remarks> // <returns> drag the array of the rectangle, there are 8 elements </returns> Public static system. drawing. rectangle [] getdragrects (system. drawing. rectangle myrect, int dragrectsize, bool innerdragrect) {system. drawing. rectangle [] dragrects = new system. dra Wing. rectangle [8]; If (innerdragrect) {dragrects [0] = new system. drawing. rectangle (myrect. x, myrect. y, dragrectsize, dragrectsize); dragrects [1] = new system. drawing. rectangle (myrect. X + (INT) (myrect. width-dragrectsize)/2), myrect. y, dragrectsize, dragrectsize); dragrects [2] = new system. drawing. rectangle (myrect. right-dragrectsize, myrect. y, dragrectsize, dragrectsize); dragrects [3] = New system. drawing. rectangle (myrect. right-dragrectsize, myrect. Y + (INT) (myrect. height-dragrectsize)/2), dragrectsize, dragrectsize); dragrects [4] = new system. drawing. rectangle (myrect. right-dragrectsize, myrect. bottom-dragrectsize, dragrectsize, dragrectsize); dragrects [5] = new system. drawing. rectangle (myrect. X + (INT) (myrect. width-dragrectsize)/2), myrect. bottom-drag Rectsize, dragrectsize, dragrectsize); dragrects [6] = new system. drawing. rectangle (myrect. x, myrect. bottom-dragrectsize, dragrectsize, dragrectsize); dragrects [7] = new system. drawing. rectangle (myrect. x, myrect. Y + (INT) (myrect. height-dragrectsize)/2), dragrectsize, dragrectsize);} else {dragrects [0] = new system. drawing. rectangle (myrect. x-dragrectsize, myrect. y-dragrectsize, Dragrectsize, dragrectsize); dragrects [1] = new system. drawing. rectangle (myrect. X + (INT) (myrect. width-dragrectsize)/2), myrect. y-dragrectsize, dragrectsize, dragrectsize); dragrects [2] = new system. drawing. rectangle (myrect. right, myrect. y-dragrectsize, dragrectsize, dragrectsize); dragrects [3] = new system. drawing. rectangle (myrect. right, myrect. Y + (INT) (myrect. height-drag Rectsize)/2), dragrectsize, dragrectsize); dragrects [4] = new system. drawing. rectangle (myrect. right, myrect. bottom, dragrectsize, dragrectsize); dragrects [5] = new system. drawing. rectangle (myrect. X + (INT) (myrect. width-dragrectsize)/2), myrect. bottom, dragrectsize, dragrectsize); dragrects [6] = new system. drawing. rectangle (myrect. x-dragrectsize, myrect. bottom, dragrectsize, drag Rectsize); dragrects [7] = new system. drawing. rectangle (myrect. x-dragrectsize, myrect. Y + (INT) (myrect. height-dragrectsize)/2), dragrectsize, dragrectsize);} return dragrects ;} /// <summary> /// calculate the cursor position on the drag rectangle /// </Summary> /// <remarks> /// set the cursor as follows // Northwest China -Southeast, north, south, and Northeast-Southwest China // ■ // ┌ ── ─ ┐ // │ 0 1 2 │ // /│ // ■ │ 7 west-south 3 │ ■ west-south // │ // /│ // │ 6 5 4 │ // └ ── ┘ // ■ // Northeast-southwest-northwest-Southeast // </remarks> /// <Param name = "Index"> drag the sequence number of the rectangle, from 0 to 7 </param> /// <returns> cursor object. If the serial number is less than 0 or greater than 7, an empty reference is returned. </returns> Public static system. windows. forms. cursor getdragrectcursor (INT index) {Switch (INDEX) {Case 0: return system. windows. forms. cursors. sizenwse; Case 1: return system. windows. forms. cursors. sizens; Case 2: return system. windows. forms. cursors. sizenesw; c ASE 3: return system. windows. forms. cursors. sizewe; Case 4: return system. windows. forms. cursors. sizenwse; Case 5: return system. windows. forms. cursors. sizens; Case 6: return system. windows. forms. cursors. sizenesw; Case 7: return system. windows. forms. cursors. sizewe;} return NULL; }}/// <summary> // operating system clipboard processing module, the provided method is a static function // </Summary> /// <example> // example of using this class in C, obtain plain text data from the operating system clipboard //// determine whether the operating system clipboard stores plain text data /// If (clipboardhandler. cangettext () /// {//// return the obtained plain text data // return clipboardhandler. gettextfromclipboard (); //} // set plain text data to the operating system clipboard /// string strtext = "plain text data to be set "; /// clipboardhandler. settexttoclipboard (strtext ); /// </example> public class clipboardhandler {// <summary> // whether the text can be obtained from the operating system clipboard /// </Summary> /// <returns> true: You can obtain text from the operating system clipboard, false not allowed </returns> Public static bool cangettext () {// clipb Oard. getdataobject may throw an exception... try {system. Windows. Forms. idataobject DATA = system. Windows. Forms. clipboard. getdataobject (); return data! = NULL & data. getdatapresent (system. windows. forms. dataformats. text) ;}catch (exception e) {return false ;}} ////// <summary> //// whether text can be set to the operating system clipboard //// </Summary> //// <returns> </returns> // public static bool cansettext () // {// return true; //}/// <summary> /// set text data to the operating system clipboard /// </Summary> /// <Param name = "strtext"> text data </param> // <returns> whether the operation is successful </returns> Public static bool settexttoclipboard (string strtex T) {If (strtext! = NULL & strtext. length> 0) {try {system. windows. forms. dataobject = new system. windows. forms. dataobject (); dataobject. setdata (system. windows. forms. dataformats. unicodetext, true, strtext); system. windows. forms. clipboard. setdataobject (dataobject, true); Return true;} catch {}} return false ;} /// <summary> /// obtain the text from the operating system clipboard /// </Summary> /// <returns>, if the operation fails, an empty object </returns> Public static string gettextfromclipboard () {try {system. windows. forms. idataobject DATA = system. windows. forms. clipboard. getdataobject (); If (data. getdatapresent (system. windows. forms. dataformats. unicodetext) {string strtext = (string) data. getdata (system. windows. forms. dataformats. unicodetext); Return strtext ;}} catch {} return NULL ;}}