TryGetValue(String, Object) 方法 参考 反馈 定义 命名空间: System.Data.SqlClient 程序集: System.Data.SqlClient.dll 包: System.Data.SqlClient v4.9.0 Source: System.Data.SqlClient.notsupported.cs 从此SqlConnectionStringBuilder 中检索与提供的键相对应的值。 C# 复制 public override bool ...
以下示例在打开连接之前创建SqlConnection并设置ConnectionString属性。 C#复制 usingMicrosoft.Data.SqlClient;classProgram{staticvoidMain(){ OpenSqlConnection(); Console.ReadLine(); }privatestaticvoidOpenSqlConnection(){stringconnectionString = GetConnectionString();using(SqlConnection connection =newSqlConnection...
'获取新的字符串内容; Dim connectionString As String = GetNewConnectionString(setting.AppServerSetting) '打开config文件; Dim config As System.Configuration.Configuration = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None) '设置新的字符串内容; config.ConnectionStrings.ConnectionStrings(DataProvi...
publicoverridestringConnectionString {get;set; } 属性值 String 连接字符串,其中包含源数据库名称和建立初始连接所需的其他参数。 默认值为一个空字符串。 例外 ArgumentException 提供了一个无效的连接字符串参数,或者未提供所需的连接字符串参数。 示例 ...
publicoverridestringConnectionString {get;set; } 属性值 String 连接字符串,其中包含源数据库名称和建立初始连接所需的其他参数。 默认值为一个空字符串。 例外 ArgumentException 提供了一个无效的连接字符串参数,或者未提供所需的连接字符串参数。 示例 ...
以下示例在打开连接之前创建SqlConnection并设置ConnectionString属性。 C#复制 privatestaticvoidOpenSqlConnection(){stringconnectionString = GetConnectionString();using(SqlConnection connection =newSqlConnection()) { connection.ConnectionString = connectionString; connection.Open(); Console.WriteLine("State: {0}...
using Microsoft.Data.SqlClient; class Program { static void Main() { SqlConnectionStringBuilder builder = new SqlConnectionStringBuilder(GetConnectionString()); Console.WriteLine("Connection string = " + builder.ConnectionString); // Keys you have provided return true. Console.WriteLine(builder.Contain...
using System; using System.Data; using System.Data.SqlClient; class Program { static void Main(string[] args) { using (SqlConnection conn = new SqlConnection("Data Source=(local);Initial Catalog=MySchool;Integrated Security=True;Asynchronous Processing=true;")) { conn.Open(); // Get the ...
con.Open();//获取第一个con中的InnerConnection属性中的值。obj1 = pInfo.GetValue(con,null);using(SqlCommand cm =newSqlCommand("select * from TblStudent", con)) { cm.ExecuteNonQuery(); } con.Close(); } Console.WriteLine("===ok===");using(SqlConnection con =newSqlConnection(constr)...
Android.Runtime.Register("getConnection", "(Ljava/lang/String;Ljava/lang/String;)Ljava/sql/Connection;", "GetGetConnection_Ljava_lang_String_Ljava_lang_String_Handler:Javax.Sql.IDataSourceInvoker, Mono.Android, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null")] public Java.Sql.IConnection?