unable to connect to asp net development server

Query data for ASP. NET Mvc development, asp. netmvc To develop a WebForm project on the. NET platform, programmers can use ADO. NET to operate data. What about the MVC database? What are the advantages compared with ADO.

This article describes how ASP. Net cannot be connected.OracleIn this case, an old system developed by vs2003 has no problem in local debugging. After being released to the server, it is found that the database cannot be connected. The following error is reported during the Open process: System. Data. OracleClient requires Oracle client software version 8.1.7 or

Asp. The various ways to connect a database in net ways to connect to a SQL database: (i), create a connection string in Web. config:1.2.3.(b), get the connection string in Aspx.cs:1.String Strcon = system.configuration.configurationmanager.connectionstrings["sampleconnectionstring"]. ConnectionString;2.

, refer to this article: https://blogs.msdn.microsoft.com/webdev/2013/10/17/ attribute-routing-in-asp-net-mvc-5/The difference between direct-attached routing and contract routingIn relation to direct-attached routing, a route that uses a controller and an action is called a contract-based Route because the request URL carries the name of the agreed Controller and action. They differ mainly in the following

Upgraded version:Datechooser ASP. NET 2.0 Ultimate EditionPlease pay attention to version updates and download the latest version. ASP. net 1. version X was released two years ago. Two years ago, Asp. the world of net has underg

good enhancement in data verification, you can directly use the System. componentModel. in DataAnnotations, special attributes such as RequiredAttribute and RangeAttribute are used to set verification rules, which is very convenient. In addition, this verification rule is still passed through the server and client, which largely satisfies the basic requirements for data verification. It would be better if the client can directly support the jquery ve

the oracletype enumeration. In addition, if the number type of Oracle is large, it exceeds. NET data type range, you must use system. data. special Class in oracleclient-oraclenumber type.Well, I will not repeat these two comparisons. The following mainly discusses the types in the system. Data. oracleclient namespace, that is, ADO. Net for Oracle Data Provider (data provider ).2. Database connection:Wheth

practices-deployment of ASP. NET programsHttp://www.so138.com/so/so138.aspx? Id = 2466ASP. NET development practices-Web Service creation and useHttp://www.so138.com/so/so138.aspx? Id = 2467ASP. NET development practices-error ha

by a few holes encountered:1. First download the Oracle Client tool, this is necessary to connect Oracle data to develop the client must be installed;2. It is best to install an Oracle database tool, such as plsql, test the connection situation, query data;3. Test the connection is not a problem, the program connection prompt service name or connection problem, etc., please check whether the connection string is written correctly;4. If you are instal

Label:Asp. NET connection DatabaseConnect to access:OleDbConnection conn = new OleDbConnection ();Conn. ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data source= file path";Connect to SQL ServerSqlConnection conn1 = new SqlConnection ();Conn1. ConnectionString = "Data source= server name; uid= user name; pwd= password; database= database name; integrated

) { //get the connection string in the configuration file stringConstr = configurationmanager.connectionstrings["myconn"]. ToString (); using(SqlConnection con=NewSqlConnection (CONSTR)) { stringSelstr ="select name from user1 where 1=1"; SqlCommand com=NewSqlCommand (Selstr,con); Con. Open (); SqlDataReader SDR=com. ExecuteReader (); while(SDR). Read ()) {LISTBOX1.ITEMS.ADD (sdr[0]. ToString ());

Some time ago, I saw the green version of Linux. NET-"Jws. Mono" published by xiaodie ". Because of my. net program is very interested in running on Linux, and I have read some mono information, but I have never spare time to study this, butterfly's blog aroused my interest. After four days, I finally ran my own application on Liunx, where the database used the PostgreSQL database. The database is used in t

, methods, and events are displayed in the form of objects, which can be used by most browsers today as scripts. A web page built with HTML or XHTML can be considered as a set of structured data, which is blocked in the DOM (Document Object Model), and the DOM provides read and write support for each object in the web page. 2.3 Javascript Javascript is a cross-platform that is widely used in browsers. Programming Language , Which is often used to make webpage special effects or form verificat