"FormsApp is a namespace but used like type"

Question

我知道这是一个常见问题，但我找不到答案。我正在尝试 Microsoft Emotion API（我在这里使用通用键来提出问题），它一直给我错误，“WindowsFormsApp2 是一个命名空间，但被使用作为一种类型”，即使我更改了命名空间。我将命名空间更改为更合适的标题，但我仍然收到 WindowsFormsApp2 被不适当地用作类型的构建错误，尽管它在代码中无处可寻。我不知道我在其他什么地方使用它会造成这个问题。

这是我的代码：

using System.Windows.Forms;
using System.IO;
using System.Net.Http.Headers;
using System.Net.Http;

namespace WindowsFormsApp2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            {
                textBox1.Text = ("Enter the path to a JPEG image file:");
                openFileDialog1.ShowDialog();
                string imageFilePath = openFileDialog1.FileName;

                MakeRequest(imageFilePath);

                textBox1.Text = ("\n\n\nWait for the result below, then hit ENTER to exit...\n\n\n");
            }


            byte[] GetImageAsByteArray(string imageFilePath)
            {
                FileStream fileStream = new FileStream(imageFilePath, FileMode.Open, FileAccess.Read);
                BinaryReader binaryReader = new BinaryReader(fileStream);
                return binaryReader.ReadBytes((int)fileStream.Length);
            }

            async void MakeRequest(string imageFilePath)
            {
                var client = new HttpClient();

                // Request headers - replace this example key with your valid key.
                client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", "13hc77781f7e4b19b5fcdd72a8df7156");

                // NOTE: You must use the same region in your REST call as you used to obtain your subscription keys.
                //   For example, if you obtained your subscription keys from westcentralus, replace "westus" in the 
                //   URI below with "westcentralus".
                string uri = "https://westus.api.cognitive.microsoft.com/emotion/v1.0/recognize?";
                HttpResponseMessage response;
                string responseContent;

                // Request body. Try this sample with a locally stored JPEG image.
                byte[] byteData = GetImageAsByteArray(imageFilePath);

                using (var content = new ByteArrayContent(byteData))
                {
                    // This example uses content type "application/octet-stream".
                    // The other content types you can use are "application/json" and "multipart/form-data".
                    content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
                    response = await client.PostAsync(uri, content);
                    responseContent = response.Content.ReadAsStringAsync().Result;
                }

                //A peak at the JSON response.
                textBox1.Text = (responseContent);
            }



        }

    }
}

Answer 1

我不喜欢你表单中 InitializeComponent() 后面的分号。

        InitializeComponent();   <--- !!!
        {
            textBox1.Text = ("Enter the path to a JPEG image file:");
            ...
        }

Answer 2

我发现了问题，实际上不在提供的代码中。 IDE 认为问题出在表单上，但是自动代码生成器使用命名空间而不是建立表单。错误表单以为问题出在表单的第19行，但实际上是在program.cs文件的开头。我希望这种情况不会经常发生。

"FormsApp is a namespace but used like type"

"FormsApp is a namespace but used like type"

c#

namespaces

windows-forms-designer