;
CbTcid.Items.Clear ();
}
Cbtcid.datasource = Customerbll.select ();
Cbtcid.valuemember = "Cid";
Cbtcid.displaymember = "CPName";
}
else
{return
;
}
But in the end I tried to, at the next time binding the data source, do not empty the last data, is it OK? So it worked.
if (Customerbll.select (). Rows.Count > 0)
{
/*cbtcid.items.clear ();
if (CbTcid.Items.Count > 0)
{
cbtcid.datasource = null;
CbTcid.Items.Clear ();
} * *
Cbtcid.datasource = Customerbll.select ();
Cbtcid.valuemember
General idea: Create a new DataSource class and give the TableView data source proxy to this class.Core code:In Viewcontroller:-(void) Setuptableview { Create callback for handling the cell in the data source method Tableviewcellconfigureblock Configureblock = ^ (Testcell *cell, model *item) { [ Cell Configurewithmodel:item]; };Create the DataSource class, and use the data you need, Cellid,
In a WinForm applet, there are two places where you need to display data in a DataGridView control. After setting Datagridview.datasource as the data query result, the first DataGridView can display the data normally, and the second DataGridView no response.The specific code is as follows:
The relevant code section of the first DataGridView:
OleDbConnection Connection=NewOleDbConnection ("provider=microsoft.jet.oledb.4.0; Data Source=test.mdb;");varCommandText ="SELECT * from AAA";
Based on the order of the prompts:1. You must inherit the Uitableviewdatasource first, so that the controller (Viewcontroller =self) can use the DataSource method.2. Make the Controller (self) a data source, and selfcan access all the methods of datasource The order of the graphs is the order in which the controller accesses: 3---4---53. The controller is accessed only once and is divided into 2 groups (se
In Asp.net 2.0, the gridview is very convenient. if you add a datasource control, you can immediately bind it to the gridview, which is very convenient. But it does.If datatable or dataview is used, the datasource control is not used. The following describes how to implement page turning and column sorting of the gridview control in Asp.net 2.0,Editing function.First, we read the employee table in the north
In Asp.net 2.0, the gridview is very convenient. if you add a datasource control, you can immediately bind it to the gridview, which is very convenient. But it does.If datatable or dataview is used, the datasource control is not used. The following describes how to implement page turning and column sorting of the gridview control in Asp.net 2.0,Editing function.First, we read the employee table in the north
= "Container" Type = "Javax. SQL. datasource" Maxactive = "4" Maxidle = "30" Maxwait = "5000" Username = "Netgeo" Password = "Netgeo" Driverclassname = "Oracle. JDBC. oracledriver" URL = "JDBC: oracle: thin: @ localhost: 1521: Fred" />
We can define multiple resources in a context element. The format is similar. In this example, I will define a database connection pool resource called fiberschedulerjbpmds.
1.2.4. Compl
I. ERP system (r3)
1) In source system, go to SE11 and create the view, then go to rso2 to create datasource.2) specify the name of the datasource in the field of rso2 and hit create.3) give the application component and description.4) In View/table field specify the zview name.5) then click Save.6) it will take you to the extract structure screen.7) If you want to hide/select any of the field you can do t
There are such business scenarios in the Development: there are 25 courts, and the structure of the Court database is the same. We need to traverse 25 courts to collect statistics on the indicators of each court. Our project uses spring boot2 to perform the same operations on 25 courts, consider using the abstractroutingdatasource that comes with spring to implement data source switching (there are many instances on the Internet for abstractroutingroutingdatasource to implement multi-data source
Usually in J2EE development, datasource configured on the server through JNDI is used, for example, the final application runs on WebLogic, while Tomcat may be used on the local machine in the development environment, at this time, we need to configure a datasource on Tomcat. on the Internet, we can see that many of the solutions are to change the server in the Tomcat runtime environment. XML or context. XM
. Net:
The. datasource attribute of dropdownlist, ListBox, checkboxlist, rodiobuttonlist, and other controls can be used.
Listitemcollection. Note: datavaluefield and datatextfield attribute values must be specified during binding!
If no field is specified, the values of value and text are both text.
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->
Listitemcollection listitems
=
New
Listit
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This type of problem may occur when some Dao support classes are embedded in spring.
For example, a class must inherit the jdbcdaosupport class.
Public
Class Searchproductshortedao
Extends Jdbcdaosupport {
}
When using Dao support classes in spring, you need to define a bean in the spring configuration file. Specifically, you need to use the bean to decide. I use jdbctemplate. Therefore, the configuration is as follow
*"----------------------------------------------------------------------* Example:datasource for table SflightTABLES:ZHBSJ. " t001--Company Code* Auxiliary SELECTION criteria StructureData:l_s_select TYPE Srsc_s_select.* Maximum number of lines for DB tableStatics:s_s_if TYPE Srsc_s_if_simple,* CounterS_counter_datapakid like Sy-tabix,* CursorS_cursor TYPE CURSOR.* Select RangesRanges:l_r_ryear for Zhbsj-ryear,L_r_poper for Zhbsj-poper,L_R_DOCNR for ZHBSJ-DOCNR,L_r_cpudt for Zhbsj-cpudt,L_r_rbuk
In the Spring environment, MyBatis supports multiple Datasource Reference implementations.Background
Recently, an old system needs to be transformed for a project. The old system uses Oracle as the storage, implements business code with massive PL/SQL code, and Socket Server with C as the bridge between Client and PL/SQL. As expected, the biggest problem with the old system is the huge PL/SQL code volume (several tens of thousands of Procedure), which
asp.net 2.0, in which the data connection has made great improvements, the new DataSource series of controls to make the connection between the database easier, many can through the wizard-style settings to complete the writing of SQL statements and database connections. The DataSource series controls in ASP.net 2.0 total 6 species, respectively:
SqlDataSource Control----Data source control used to connect
If you have multiple data source issues in your application, such as a main library, and you need to access a few tables in other libraries, you can configure this:
Data Source configuration:
Share a sqlmapclient:
To access the DAO configuration of the main library without specifying DataSource, share the DataSource in Sqlmapclient:
To access the DAO configuration of other dat
In a word, spring's integration of Hibernate is implemented in Applicationcontext.xml configuration Sessionfactory, in which sessionfactory to assemble datasource. The configuration of the DataSource Bean is described in detail below.
Code First (the more complete attribute)
The 1.Bean ID is datasource, and the corresponding Java class is Basicdatasource, whi
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