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);return dttree;} Private DataTable Getallnodes (String parentid){DataTable dt = Getallnodes ();DataTable dt = Dttree;DataTable _dt = dt. Clone (); datarow[] DRS = dt. Select ("ParentID = '" + parentid.) ToString () + "'");if (DRS). Length > 0)//{foreach (DataRow Dr in Drs)// {_dt. ImportRow (DR);// }//}foreach (DataRow dr in Dt. Rows){if (dr["ParentID"]. ToString () = = ParentID. ToString ())_dt. Rows.Add (Dr. ItemArray);}return _DT;} public string Createexttreejson (String logidid,string Sess

access|datagrid| Dynamic | pagination | statement DataGrid Connect Access Quick Pagination Method (4)--Dynamically generate SQL statements Using System; Using System.Text; namespace paging { Summary description of the fastpaging. public class Fastpaging { Private fastpaging () { } Gets a SELECT statement that sorts and pages the query based on the specified field. public static String Paging ( int PageSize, int PageIndex, int RecordCount, String TableName, String QueryFields, String PrimaryK

" seveal times,because It is a good film.Kevin has seen "this killer is not too cold" several times, because it is a good movie. /noun: Kevin. 3.Matcher class: Matcher method is as follows: Matcher Appendreplacement (StringBuffer SB, string replacement) replaces the current matching substring with the specified string. and adds the replaced substring and the string segment that precedes the last matching substring to a StringBuffer object. s

The following describes the application using asp.net json serialization. If you need it, please refer to it. The Code is as follows: Copy code /// /// Serialize the object into a Json text stream./// /// /// /// /// Public static string ToJson (this object source, string [] inclusive = null, string [] exclusive = null){If (source = null){Return "null ";}Var type = source. GetType ();Switch (Type. GetTypeCode (type )){// Numeric typeCase TypeCode. Byte:Case TypeCode. Deci

} public static void StringBufferDemo () {StringBuffer SB = new StringBuffer (); StringBuffer S1 = SB. append (4); System. out. println (SB); System. out. println (S1); System. out. println (SB = S1); S1 = SB. append (true ). append ("nihao"); System. out. println (

The code is as follows:Copy code /// /// Serialize the object into a Json text stream./// /// /// /// /// Public static string ToJson (this object source, string [] inclusive = null, string [] exclusive = null) {If (source = null) {Return "null "; }Var type = source. GetType ();Switch (Type. GetTypeCode (type )) {// Numeric typeCase TypeCode. Byte:Case TypeCode. Decimal:Case TypeCode. Double:Case TypeCode. Int16:Case TypeCode. Int32:Case TypeCode. Int64:Case TypeCode. SByte:Case Typ

three data items. Second, write the export method. /// Export dataset to txt /// Export TXT file name Public static void Totxt ( Dataset DS, String Filename,Page Page ){ Stringbuilder SB = New Stringbuilder (); Datatable Table = Ds. Tables [0]; Datarowcollection Rows = table. Rows; Datacolumncollection Columns = table. columns; // Number of rows Int Rowcount = rows. count; // Number of Columns Int Columncount = columns. count; // Maxim

Public static IList { Int I = 0; IList DBUitility db = new DBUitility (); SqlConnection conn = db. CreateConnection (@ "Data Source =. \ sqlExpress; Initial Catalog = PBCS; Integrated Security = True "); DataTable dt = db. GetDataAsDataTable ( "Select name, object_id from sys. objects where type = 'p' and charindex ('_', [name]) = 0 and objectproperty (object_id, 'isprocedure ') = 1 "); Foreach (DataRow dr in dt. Rows) { String id = dr ["object_id"]. ToString (); String name = dr ["name"]. T

Private void toexcel (String title){Response. Clear ();Response. Buffer = false;Response. charset = "UTF-8 ";Response. appendheader ("content-disposition", "attachment; filename =" + httputility. urlencode (title) + ". xls ");Response. contentencoding = system. Text. encoding. utf8;Response. contenttype = "application/MS-excel ";Response. Write ("This. enableviewstate = false;System. Io. stringwriter ostringwriter = new system. Io. stringwriter ();Htmltextwriter ohtmltextwriter = new htmltextwri

Reflection first UnderstandOne: System. TypeGet basic information:Type.Name//Class nameType.fullname//full pathType.namespace//Space name Public classStudent { Public intId {Set;Get; } Public stringName {Set;Get; } Public intAge {Set;Get; } } Static voidMain (string[] args) {Student S=NewStudent () {Id =1, Name ="Zzj", age = A }; Type T=typeof(student); //View class InformationConsole.WriteLine ("name={0},fullname={1},namespace={2}", T.name, T.fullname, t.namespace); }View Code：

★ReplaceAll ()/appendReplacement ()/appendTail ():The Matcher class also provides four methods to replace matched substrings with specified strings: Replaceall () Replacefirst () AppendReplacement () AppendTail () Public class Test {/*** @ Param args* @ Return* 4* 1240* 124067*/Public static void main (String [] args ){String string = "1234567 ";Matcher = Pattern. compile ("3 (4) 5"). matcher (string );If (matcher. find ()){System. out. println (matcher. group (1 ));StringBuffer

text is added.The problem with this method is that it consumes too much resources for such a simple process. In this example, the impact may be very small (that is, a small amount of code is given), but doing so in a large application with a lot of operations will degrade the performance. The StringBuffer class must solve this problem.Use StringBuffer to process stringsThe StringBuffer class is designed to use and create and operate dynamic string information. The memory allocated to this objec

///Static Constructors8 /// 9 Staticlogfactory ()Ten { One varelement = Createconfigelement ();//Create XmlElement ALog4net. Config.XmlConfigurator.Configure (Element);//Configure Log4net - } - the /// - ///Create a ilog for logging - /// - /// + Public Staticlog4net. ILog Createlogger () - { +StackTrace st =NewStackTrace (); A vararr = St. GetFrame (1); at returnlog4

. ToString ());Response. Write (sw. ToString ());Response. Write (AddExcelbottom ());Sw. Close ();Response. End ();}Catch{ }}Protected void btn_toexcel_Click (object sender, EventArgs e){String orderid = "";If (Request. Params ["id"]! = Null){Orderid = Request. Params ["id"]. ToString ();}Toexcel ("order" + orderid + "details ");}Public static string AddExcelHead (string title){StringBuilder sb = new StringBuilder ();

1 Overview of the StringBuffer1.1 StringBuffer If we need to stitch the strings, each stitch will build a new string object, which is time consuming and wasted space. And stringbuffer can solve this problem. StringBuffer is a thread-safe sequence of characters. 1.2 Construction methods Construction method: No-parameter construction method Public StringBuffer () Construction Method: Specifies the capacity of the string buffer Public StringBuffer (in

of the foreground, FID field is a to facilitate the design of the foreground query, the advantage of this design is that if the query, such as all products under the top-level menu, only need to match the fuzzy query prefix, you can query all the products, the design of the field is still a little small, IsLeaf is to determine whether it is a leaf node, belongsid the parent ID, Foreground code: Copy Code code as follows: Showtoolbar= "true" showcollapsebutton= "true" showfooter=

The simple implementation of Js2word/html2word is described in C # as follows: StringBuilder SB = new StringBuilder ();Sb. Append ("Sb. Append ("xmlns:o= ' Urn:schemas-microsoft-com:office:office '");Sb. Append ("xmlns:w= ' Urn:schemas-microsoft-com:office:word '");Sb. Appen

1. Define an interface for reflectionPublic interface irunexpression{Hashtable mainrun (bool isdebug );Int precision{Set; get ;}} 2. Generate the DLL of the database content. Here, the content is first written to death and can be read directly from the database.Stringbuilder _ sb = new stringbuilder ();// Load reference_ Sb. append ("using system; \ r \ n ");_ Sb