EntityConnectionStringBuilder 建構函式

public:
 EntityConnectionStringBuilder();

public EntityConnectionStringBuilder();

Public Sub New ()

範例

以下範例示範如何將 與 EntityConnectionStringBuilderSqlConnectionStringBuilder結合使用。 程式碼設定 SqlConnectionStringBuilder 的屬性，以建立一個 SqlConnection 連接字串，提供底層提供者連接字串的一部分。 請注意，提供者名稱無法使用 SqlConnectionStringBuilder 設定，因為它的語法不SqlConnection 連接字串。 程式碼透過設定 EntityConnection 屬性來建立 EntityConnectionStringBuilder 連接字串。

// Specify the provider name, server and database.
string providerName = "System.Data.SqlClient";
string serverName = ".";
string databaseName = "AdventureWorks";

// Initialize the connection string builder for the
// underlying provider.
SqlConnectionStringBuilder sqlBuilder =
    new SqlConnectionStringBuilder();

// Set the properties for the data source.
sqlBuilder.DataSource = serverName;
sqlBuilder.InitialCatalog = databaseName;
sqlBuilder.IntegratedSecurity = true;

// Build the SqlConnection connection string.
string providerString = sqlBuilder.ToString();

// Initialize the EntityConnectionStringBuilder.
EntityConnectionStringBuilder entityBuilder =
    new EntityConnectionStringBuilder();

//Set the provider name.
entityBuilder.Provider = providerName;

// Set the provider-specific connection string.
entityBuilder.ProviderConnectionString = providerString;

// Set the Metadata location.
entityBuilder.Metadata = @"res://*/AdventureWorksModel.csdl|
                            res://*/AdventureWorksModel.ssdl|
                            res://*/AdventureWorksModel.msl";
Console.WriteLine(entityBuilder.ToString());

using (EntityConnection conn =
    new EntityConnection(entityBuilder.ToString()))
{
    conn.Open();
    Console.WriteLine("Just testing the connection.");
    conn.Close();
}

' Specify the provider name, server and database.
Dim providerName As String = "System.Data.SqlClient"
Dim serverName As String = "."
Dim databaseName As String = "AdventureWorks"

' Initialize the connection string builder for the
' underlying provider.
Dim sqlBuilder As New SqlConnectionStringBuilder

' Set the properties for the data source.
sqlBuilder.DataSource = serverName
sqlBuilder.InitialCatalog = databaseName
sqlBuilder.IntegratedSecurity = True

' Build the SqlConnection connection string.
Dim providerString As String = sqlBuilder.ToString

' Initialize the EntityConnectionStringBuilder.
Dim entityBuilder As New EntityConnectionStringBuilder

'Set the provider name.
entityBuilder.Provider = providerName
' Set the provider-specific connection string.
entityBuilder.ProviderConnectionString = providerString
' Set the Metadata location to the current directory.
entityBuilder.Metadata = "res://*/AdventureWorksModel.csdl|" & _
                            "res://*/AdventureWorksModel.ssdl|" & _
                            "res://*/AdventureWorksModel.msl"

Console.WriteLine(entityBuilder.ToString)

Using conn As EntityConnection = New EntityConnection(entityBuilder.ToString)
    conn.Open()
    Console.WriteLine("Just testing the connection.")
    conn.Close()
End Using

另請參閱

• 連接字串
• 與 EntityClient 合作

public:
 EntityConnectionStringBuilder(System::String ^ connectionString);

public EntityConnectionStringBuilder(string connectionString);

new System.Data.EntityClient.EntityConnectionStringBuilder : string -> System.Data.EntityClient.EntityConnectionStringBuilder

Public Sub New (connectionString As String)

參數

範例

以下範例示範如何將 與 EntityConnectionStringBuilderSqlConnectionStringBuilder結合使用。 程式碼設定 SqlConnectionStringBuilder 的屬性，以建立一個 SqlConnection 連接字串，提供底層提供者連接字串的一部分。 請注意，提供者名稱無法使用 SqlConnectionStringBuilder 設定，因為它的語法不SqlConnection 連接字串。 程式碼透過設定 EntityConnection 屬性來建立 EntityConnectionStringBuilder 連接字串。 它不會使用過載。connectionString

// Specify the provider name, server and database.
string providerName = "System.Data.SqlClient";
string serverName = ".";
string databaseName = "AdventureWorks";

// Initialize the connection string builder for the
// underlying provider.
SqlConnectionStringBuilder sqlBuilder =
    new SqlConnectionStringBuilder();

// Set the properties for the data source.
sqlBuilder.DataSource = serverName;
sqlBuilder.InitialCatalog = databaseName;
sqlBuilder.IntegratedSecurity = true;

// Build the SqlConnection connection string.
string providerString = sqlBuilder.ToString();

// Initialize the EntityConnectionStringBuilder.
EntityConnectionStringBuilder entityBuilder =
    new EntityConnectionStringBuilder();

//Set the provider name.
entityBuilder.Provider = providerName;

// Set the provider-specific connection string.
entityBuilder.ProviderConnectionString = providerString;

// Set the Metadata location.
entityBuilder.Metadata = @"res://*/AdventureWorksModel.csdl|
                            res://*/AdventureWorksModel.ssdl|
                            res://*/AdventureWorksModel.msl";
Console.WriteLine(entityBuilder.ToString());

using (EntityConnection conn =
    new EntityConnection(entityBuilder.ToString()))
{
    conn.Open();
    Console.WriteLine("Just testing the connection.");
    conn.Close();
}

' Specify the provider name, server and database.
Dim providerName As String = "System.Data.SqlClient"
Dim serverName As String = "."
Dim databaseName As String = "AdventureWorks"

' Initialize the connection string builder for the
' underlying provider.
Dim sqlBuilder As New SqlConnectionStringBuilder

' Set the properties for the data source.
sqlBuilder.DataSource = serverName
sqlBuilder.InitialCatalog = databaseName
sqlBuilder.IntegratedSecurity = True

' Build the SqlConnection connection string.
Dim providerString As String = sqlBuilder.ToString

' Initialize the EntityConnectionStringBuilder.
Dim entityBuilder As New EntityConnectionStringBuilder

'Set the provider name.
entityBuilder.Provider = providerName
' Set the provider-specific connection string.
entityBuilder.ProviderConnectionString = providerString
' Set the Metadata location to the current directory.
entityBuilder.Metadata = "res://*/AdventureWorksModel.csdl|" & _
                            "res://*/AdventureWorksModel.ssdl|" & _
                            "res://*/AdventureWorksModel.msl"

Console.WriteLine(entityBuilder.ToString)

Using conn As EntityConnection = New EntityConnection(entityBuilder.ToString)
    conn.Open()
    Console.WriteLine("Just testing the connection.")
    conn.Close()
End Using

備註

所提供的 connectionString 欄位不會檢查關鍵字/值對是否有效。 關於有效的關鍵字/值語法，請參見 ConnectionString。

不變的提供者名稱必須在參數 connectionString 中指定。 支援的醫療提供者包括以下幾種：

• System.Data.Odbc
• System.Data.OleDb
• System.Data.OracleClient
• System.Data.SqlClient
• Microsoft.SqlServerCe.Client

另請參閱

• 連接字串
• 與 EntityClient 合作