标签 'N' 已经声明。标签名称在查询批处理或存储过程中必须是唯一的

The label 'N' has already been declared. Label names must be unique within a query batch or stored procedure

我有一个问题。

我需要在 vb.net 中制作一个需要在 sql 数据库中设置文本的程序。 但每次当我点击导出到数据库时，程序都会关闭并显示：

The label 'N' has already been declared. Label names must be unique within a query batch or stored procedure

我不知道这是什么意思，我是 .net 语言的新手。希望有人能帮助我。

Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click

    Dim con As New SqlConnection
    Dim cmd As New SqlCommand

    con.ConnectionString = "Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=C:\Users\klaasjelle\documents\visual studio 2017\Projects\Opdracht\Opdracht\Opdracht1.mdf;Integrated Security=True"

    con.Open()

    cmd.Connection = con

    cmd.CommandText = $"INSERT INTO opdracht ('FilePath', 'ImageSide', 'ImageSize') VALUES ('{TextBox1.Text}')"

    cmd.ExecuteNonQuery()

End Sub

我想你没有有效的命令文本。 

    cmd.CommandText = "INSERT INTO opdracht (FilePath, ImageSide, ImageSize) VALUES ('"
 + TextBox1.Text + "')"