好吧,我做了一些挖掘,然后用胶带把这个解决方案粘在一起:

private static string CreateNewConnectionString(string connectionName, string password)
{
    var config = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("~").ConnectionStrings.ConnectionStrings[connectionName];
    var split = config.ConnectionString.Split(Convert.ToChar(";"));
    var sb = new System.Text.StringBuilder();

    for (var i = 0; i <= (split.Length - 1); i++)
    {
        if (split[i].ToLower().Contains("user id"))
        {
            split[i] += ";Password=" + password;
        }

        if (i < (split.Length - 1))
        {
            sb.AppendFormat("{0};", split[i]);
        }
        else
        {
            sb.Append(split[i]);
        }
    }
    return sb.ToString();
}

虽然这不是最漂亮的方法,但它完成了任务。我向它传递一个连接字符串名称和密码,它返回一个更新的连接字符串和密码。我就是这样实现的:

_entities = new UploadEntity(CreateNewConnectionString("UploadEntity", "[removed]"));
_entities.AddToUploadSet(uploadFile);
_entities.SaveChanges();

使用 connection string builder .

在web.config中,将有一个类似于以下内容的条目:

  <connectionStrings>
    <add name="HelpEntities" connectionString="metadata=res://*/Models.HelpModel.HelpModel.csdl|res://*/Models.HelpModel.HelpModel.ssdl|res://*/Models.HelpModel.HelpModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;Data Source=(local);Initial Catalog=XXX;Integrated Security=True;MultipleActiveResultSets=True&quot;"
      providerName="System.Data.EntityClient" />
  </connectionStrings>