Although most of the time your JavaScript interaction will be described by using a DataTable initialization object as part of using this site, sometimes you will find it useful for some external control tables. You can use the following functions from jquery. A DataTable object. There are also some plug-in API functions available that extend the functionality of
To convert a able to json, You Can serialize dt to json and put it into the hidden control hidBoundary at the front end. The specific implementation is as follows, if you have similar requirements, refer to section 1. serialize dt into json and put it in the hidden control "hidBoundary" at the front end:
The Code is as follows:
String json = JsonConvert. SerializeObject (dtTemp );This. hidBoundary. Value = json;
Newtonsoft. Json. dll needs to be referenced
2. obtain data in dt from the
DataTable obtains the column name DataTable and updates it to the database in batches. datatable column names
I haven't written anything for a long time. I haven't worked hard on technology in the past few months. Let's talk about the usage of the recently learned DataTable, which is suitable for beginners.
1
DataTable. ImportRow () and DataTable. Rows. Add (), datatable. importrow
When writing code today, ImportRow () is used to add records to the DataTable. The Code is as follows:DataTable dt = datatable;
DataRow dr = dt. NewRow ();
Dr ["FileName"] = fileName;
Dr ["DbName"] = D
Remove duplicate data on the basis of a large DataTable, create two small DataTable respectively, save multiple database connections, improve efficiency, speed up program running, datatable updates Database
DataTable tab = new DataTable ();
Tab = DBUtil. GetDataSet (strCmd,
1 /// 2 ///Adding a DataTable collection B to DataTable a merges with two or more DataTable that has no primary key for only one single row of data3 /// 4 /// A5 /// B6 /// the merged DataTable7 Public StaticSysdatatable Union ( ThisSysdatatable Tborigeon,paramssysdatatable[] tbadded)8 {9Sysdatatable Arrs =Newsysdatatable ();Ten
Extracted online, verified:
Create a able, add column names to the table datatable, Add rows to the table datatable, and filter the contents of the table datatable.1. Create a ableDatatable dt = new datable (); // you can create a name for the table, TB2. Add a column name to the table:DT. Columns. Add ("ID", typeof (system. int32); // The type can be changed, s
Returns the able set reflection list.
/// View code
Converts an ilist collection class to a datatable
/// View code
Convert the list
/// View code
Reflection list
Sort DataTable.DefaultView.Sort = "ID ASC" "DataTable Merge 1 (must be the same structure DataTable) in the DataTable in the Merge propertyTwo DataTable merges, originally tested using the datatable Merge method to merge reads directly, one is to receive a lot of data types
In actual programming projects, we often encounter the following situation: datatable is not in the database, or datatable has not been written to the database, or the able read from the database has been changed locally, I have not written it back to the database (other changes may be required). In these cases, I only need to use it. the powerful functions of the dataview class provided by the net class li
In actual programming projects, we often encounter the following situation: datatable is not in the database, or datatable has not been written to the database, or the able read from the database has been changed locally, I have not written it back to the database (other changes may be required). In these cases, I only need to use it. the powerful functions of the dataview class provided by the net class li
Datatable deletes rows and datatable deletes rows.
List the correct statements first. If you just want to correct the statements right away, copy them first,
Protected void deleteDataRow (int RowID, DataTable dt) {for (int I = dt. rows. count-1; I> = 0; I --) {if (Convert. toInt32 (dt. rows [I] ["RowID"]) = RowID) dt. rows. removeAt (I) ;}}/* He asked hovertree.c
Datatable. Select ("condition") return datatable SolutionArticleSource: http://www.cnblogs.com/hermes262/archive/2006/12/06/583832.html
In actual programming projects, we often encounter the following situation: datatable is not in the database, or datatable has not been written to the database, or the able read from
Nothing to do, only write code, the following is the DataTable to list and list to the two methods of the DataTable, the main technical points to use the principle of reflection: /// ///Model Transformation Classes/// Public classConvertmodel {/// ///DataTable Goto List/// /// types in list /// the
In actual programming projects, we often encounter the following situation: datatable is not in the database, or datatable has not been written to the database, or the able read from the database has been changed locally, I have not written it back to the database (other changes may be required). In these cases, I only need to use it. the powerful functions of the dataview class provided by the net class li
There are two ways to initialize a jQuery DataTable:var datatable = $ (' #example '). DataTable ();Andvar DataTable = $ (' #example '). DataTable ();Both are capable of initializing a DataTable. However, the result of inference datatable
In actual programming projects, we often encounter the following situation: datatable is not in the database, or datatable has not been written to the database, or the able read from the database has been changed locally, I have not written it back to the database (other changes may be required). In these cases, I only need to use it. the powerful functions of the dataview class provided by the net class li
Tags: os SP data BS Database SQL nbsp Table method1.DataTable DT; Assuming the field is name, DT has saved the datadt.rows[0]["name"] = = System.DBNull.Value; Determines whether the name field of the first row of data is empty2.DataTable DT; Assuming the field is name, DT has saved the datadt.rows[0]["Name"]. ToString () = = ""; Determines whether the name field of the first row of data is empty3.
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