建立從ADO.NET

Question

實體連接字符串在我的網站我有定期ADO.NET連接字符串，如： ，

現在Entity Framework添加它自己的連接字符串到同一個數據庫。

如何才能在運行時只使用一個ADO.NET連接字符串並構建實體連接字符串？

Answer 1

可以使用EntityConnectionStringBuilder在運行時動態在運行時生成連接字符串，但你仍然需要metada此

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