javascript datatable

usingSystem;usingSystem.Data;usingSystem.Linq;usingSystem.Collections;usingSystem.Collections.Generic;usingSystem.Web.Script.Serialization;namespace***{ Public classDatatabletojson {#regionDataTable-to-Json string/// ///DataTable object converted to JSON string/// /// /// Public Static stringToJson ( ThisDataTable DT) {JavaScriptSerializer JavaScriptSerializer=NewJavaScriptSerializer (); Javascriptserializer.maxjso

The DataTable and object classes written many years ago are converted into datatable entities.Introduction I have been using Ado.net many years ago and gradually transformed to other orm systems. During the transformation process, I intend to combine the two models, use the row status in the DataTable to improve the data control functions in mvc. Now let it go an

Datatable: add columns, Set primary keys, Add rows, query, and update There are too many materials for database operations and you are familiar with them.However, sometimes the data volume is small, but frequently updated variable operations usually use a custom structure, but the maintainability and flexibility of the custom structure is not as good as that of the temporary table, we can use datatable as

/**/ /// /// Execute the query in the datatable to return the new datatable /// /// Source data datatable /// Query Conditions /// Private Datatable getnewdatatable (datatable DT, String Condition) {

The merge method combines two data tables with similar structures into one data table: Instance Code : // Create Table1 Datatable dt1 = New Datatable (); dt1.columns. Add ( " ID " ); Dt1.columns. Add ( " Name " ); Dt1.columns. Add ( " PWD " ); For ( Int I = 0 ; I 5 ; I ++ ) {Dt1.rows. Add ( New Object [] {I. tostring (), " Name " + I. tostring (),

DataTable to JSON JSON to DataTableDataTable to JSON#region DataTable to JSONprivate String Dtb2json (DataTable dtb){JavaScriptSerializer JSS = new JavaScriptSerializer ();ArrayList dic = new ArrayList ();foreach (DataRow row in DTB. Rows){Dictionaryforeach (DataColumn col in DtB. Columns){Drow. Add (Col. ColumnName, Row[col. ColumnName]);}Dic. ADD (drow);}Return

Method One: DataTable Tbldatas = new DataTable ("Datas"); DataColumn DC = null; DC = TBLDATAS.COLUMNS.ADD ("ID", Type.GetType ("System.Int32")); dc. AutoIncrement = true; Automatically add dc. AutoIncrementSeed = 1; //starting at 1 dc. AutoIncrementStep = 1; //step is 1 dc. AllowDBNull = false; // DC = TBLDATAS.COLUMNS.ADD ("Product", Type.GetType ("System.String"));

sent in the past. Return to the Javascript section of the client. We noticed that when calling pagemethods. senddatatable (), we specified a callback function named cb_senddatatable (). The JavaScript function is defined as follows: FunctionCb_senddatatable (result ){Debugger;} Nothing to mention. As long as the callback function can be successfully executed, that is, the debugger is hit, we will be s

for(inti =0; i ) { strings ="Select COUNT (*) from"+ dt. rows[i]["aliasname"] +". Dbo.web_historydata where factoryid="+ dt. rows[i]["Factoryid"] +"and datetime >dateadd (Hour,-1,getdate ())"; intCount =my_sqlhelper.selectcounts (s); if(count0) {Log.save ("Shu Hkta is so handsome."); } }If you don't know what the column name is, you can also traverse for (int0; i ) { for (int0; j ) { Console.Writ

DataTable tab = new DataTable ();tab = Dbutil.getdataset (Strcmd, "TESTA. V_yhj_vip_wx_xsmx "). Tables[0];Create a small table:DataView view = new DataView (tab);DataTable ordertable = view. ToTable (True, "ORDERDATE", "Member_code", "Inv_num", "Zje", "Zfje", "Sell_qty", "Shop_code");Generate a smaller table in ordertable-based Str_inv_numfor (int i = 0; i {for (

Delete a repeated DataTable column. Only duplicate rows in one of the columns are deleted. One datatable ColumnVs2005 has encapsulated deduplication methods for datatable: 1 // remove duplicate rows 2 DataView dv = table. defaultView; 3 table = dv. toTable (true, new string [] {"name", "code"}); 4 5 at this time, the table only has two rows: name and code, if the

Querying a DataTable with LINQ StaticDataTable table =NewDataTable (); StaticDataColumn DC =NewDataColumn (); Static voidMain () {createtable (); Table. Rows.Add (1,2,"2010-1-1"); Table. Rows.Add (2,3,"2010-1-1"); Table. Rows.Add (3,4,"2010-1-1"); Table. Rows.Add (4,5,"2010-1-1"); Table. Rows.Add (5,2,"2010-1-2"); Table. Rows.Add (6,3,"2010-1-2"); Table. Rows.Add (7,4,"2010-1-2"); Table. Rows.Add (8,5,"2010-1-2"); varquery = fromDtinchtable. As

datarow[] Dr = _deptcodedt.select (string. Format ("Ward_code = ' {0} '", Localsetting.wardcode)); if(Dr. Length 0) return; DataTable tempt=NewDataTable (); Tempt= dr[0]. Table.clone ();//Clone table StructureDataSet Tempds =NewDataSet (); TEMPDS.TABLES.ADD (tempt); //adding to a secondary data setTempds.merge (DR);//using data collection to parallel set to tableDeptcmbox.datasource= tempds.tables[0]; Deptcmbox.displaym

Repeated datatable initialization and datatable Initialization The datatable version written in my blog is 1.10 or later. I have not studied whether to use the previous version. View errors directly DataTables warning: table id = rap-table-list-comm-mem-Cannot reinitialise DataTable. For more information about this

We are working on ADO today. NET adapter automatically triggers the database update function for data, and finds a very strange problem. Originally, data operations were performed by their own code to complete the update, and this method was never involved, so it was a problem. 1 SQLiteDataAdapter dataAdpater = new SQLiteDataAdapter("Select cid,sd from VC", conn); 2 dataAdpater.DeleteCommand = new SQLiteCommand("delete From VC Where cid = @cid", conn); 3 dataAdpater.DeleteCommand.Parameters.Ad

Export DataGridView, DataTable to Excel, datatable to export excel Recently, the speed of exporting a dview to Excel is slow, and the data volume is small. However, the number of columns of fields is large (about 2000). I checked many methods on the Internet to check whether it is slow or not, Or it cannot run normally. After modification, it passes debugging and the export process is much faster than befo

Description of the format of parameters and returned values transmitted at the front end of datatable, and the returned values of datatable Content: JQuery dataTable Ajax paging implementation Frontend transmission parameters: columns [0] [data] 0 columns [0] [name] columns [0] [orderable] truecolumns [0] [search] [regex] falsecolumns [0] [search] [value] col