c# - 我该如何解决这个错误？

Question

在 C# 中使用实体框架，我收到此错误：

已添加条目“AlMizanEntities”。（D:\Document\Almizan\AlMizan\C#\AlMizan\bin\Debug\AlMizan.vshost.exe.config 第 7 行）

我的代码：

private void Fraz()
{
    label1.Text = "Fraz ...";
    Application.DoEvents();

    AlMizanEntities1 ObjAE = new AlMizanEntities1();
}

public partial class AlMizanEntities1 : ObjectContext
{
   /// <summary>
   /// Initializes a new AlMizanEntities1 object using the connection string found in the 'AlMizanEntities1' section of the application configuration file.
   /// </summary>
   // *ERROR* occurs here
   public AlMizanEntities1() : base("name=AlMizanEntities1", "AlMizanEntities1")
   {
      this.ContextOptions.LazyLoadingEnabled = true;
      OnContextCreated();
   }

   /// <summary>
   /// Initialize a new AlMizanEntities1 object.
   /// </summary>
   public AlMizanEntities1(string connectionString) : base(connectionString, "AlMizanEntities1")
   {
        this.ContextOptions.LazyLoadingEnabled = true;
        OnContextCreated();
   }

   /// <summary>
   /// Initialize a new AlMizanEntities1 object.
   /// </summary>
   public AlMizanEntities1(EntityConnection connection) : base(connection, "AlMizanEntities1")
   {
        this.ContextOptions.LazyLoadingEnabled = true;
        OnContextCreated();
   }
}

Answer 1

删除或删除该文件line 7中D:\Document\Almizan\AlMizan\C#\AlMizan\App.config 其他地方的重复行。