When the statement has completed, developers must call the EndExecuteReader method to finish the operation and retrieve the SqlDataReader returned by the command. The BeginExecuteReader method returns immediately, but until the code executes the corresponding EndExecuteReader method call, it ...
The subroutine then creates a SqlCeCommand to retrieve the ProductID, ProductName, and UnitsInStock columns from the Products table. The subroutine opens a SqlCeDataReader over the result set generated by this command and fetches the first row. The product name is displayed in the ProductName...
to connect//to the SQL Server database in which you created the sample//table in Section 1.0cn->ConnectionString ="Server=server;Database=northwind;UID=login;PWD=password;"; cn->Open();//Initialize the SqlDataAdapter object by specifying a Select command//that retrieves dat...
Represents a Transact-SQL statement or stored procedure to execute against a SQL Server database. This class cannot be inherited. C#复制 [System.Obsolete("Use the Microsoft.Data.SqlClient package instead.")]publicsealedclassSqlCommand:System.Data.Common.DbCommand,ICloneable ...
42846 Cast from source type to target type is not supported. -461 42847 An OVRDBF command was issued for one of the referenced files, but one of the parameters is not valid for SQL. -7002 42848 Isolation level CS WITH KEEP LOCKS is not allowed. -194 42850 A logical file is invalid in...
// Specify the username parameter.command.Parameters.Add(newSqlParameter("@Username", userName));// Specify the password parameter.command.Parameters.Add(newSqlParameter("@Password", password));// Retrieve the number of matching records.introwCount = ...
The SELECT SQL command is built into Visual FoxPro like any other Visual FoxPro command. When you use SELECT to pose a query, Visual FoxPro interprets the query and retrieves the specified data from the tables. You can create a SELECT query from within the following: Command window Visual ...
Retrieves the latest checked in version of the selected files. If a solution or project is selected, this command retrieves the latest version of all solution and project files. Getcommand Displays theGetdialog box, which you can use to retrieve the latest version of a selected file, or to...
String dsName = mergedSqlConfig.getDataSource(); String tmName = mergedSqlConfig.getTransactionManager(); DataSource dataSource = TestContextTransactionUtils.retrieveDataSource(testContext, dsName); PlatformTransactionManager txMgr = TestContextTransactionUtils.retrieveTransactionManager(testContext, tmName...
do you want to retrieve the command standard output? [Y/n/a] y #是否进行标准输出 执行以上命令后,提示是否将返回的结果进行标准输出。这里输入y,将显示执行结果。输出如下: command standard output: --- Windows IP 配置 以太网适配器 Npcap Loopback Adapter: ...