无法将System.Windows.Forms.Form隐式转换为“字符串”

如何解决无法将System.Windows.Forms.Form隐式转换为“字符串”

嘿，所以我有一个模式弹出窗体，在该窗体中，我必须上传文件并将数据发布到数据库。在控制器中，我通过FormCollection检索值。当我尝试使用表单集合获取输入字段时，出现以下错误：无法将System.Windows.Forms.Form隐式转换为'String'。这是我的代码：

控制器

DECLARE @Test VARCHAR(MAX) = '\\asda.xxv.ww\data\tas\Test\Clients\asdas\TestFolder\QA'
DECLARE @Test2 VARCHAR(MAX) = '\\uxcvs.xcxcv.xcv\data\tas\Test\Clients\xcvcx\xcvxcv\QA\'

SELECT RIGHT(SUBSTRING(@Test,2,LEN(@Test)-2),CHARINDEX('\',SUBSTRING(REVERSE(@Test),LEN(REVERSE(@Test))-2),(CHARINDEX('\',LEN(REVERSE(@Test))-2))))) AS DiconFilePath,RIGHT(SUBSTRING(@Test2,LEN(@Test2)-2),SUBSTRING(REVERSE(@Test2),LEN(REVERSE(@Test2))-2),LEN(REVERSE(@Test2))-2))))) AS DiconFilePath2
-----------------------,patindex('%\%',reverse(@Test)),reverse(@Test2))
----------------,case 
    when patindex('%\%',reverse(@Test)) > 1  THEN 
        reverse(LEFT(reverse(@Test),reverse(@Test)) - 1))
    else
        @Test
end,case
    WHEN patindex('%\%',reverse(@Test2)) = 1 and len(@Test2) > 1 then
    right(reverse(@Test2),LEN(reverse(@Test2)) - 1)
    ELSE
     @Test2
end,reverse(@Test2)) = 1 and len(@Test2) > 1 then
        reverse(substring(right(reverse(@Test2),LEN(reverse(@Test2)) - 1),right(reverse(@Test2),LEN(reverse(@Test2)) - 1))))
    ELSE
        @Test2
end

HTML格式

 [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult Create(FormCollection formCollection,HttpPostedFileBase upload,AAC_procedure_document_types model,Ngarkodokument ngarkodok)
        {
            try
            {
                if (ModelState.IsValid)
                {
                    if (upload != null && upload.ContentLength > 0)
                    {
                        var file = new AAC_procedure_documents
                        {
                            Emer_Dokumenti = System.IO.Path.GetFileName(upload.FileName),Lloji_File = model.Emri_llojit,Content_Type = upload.ContentType
                        };
                        using (var reader = new System.IO.BinaryReader(upload.InputStream))
                        {
                            file.Permbajtje_Dokumenti = reader.ReadBytes(upload.ContentLength);
                        }
                        ngarkodok.AAC_procedure_documents = new List<AAC_procedure_documents> { file };
                    }

                    AAC_procedure_documents_location lokacion = new AAC_procedure_documents_location();
                    lokacion.Rafti = formCollection["Rafti"];
                    lokacion.Zyra = formCollection["Zyra"].ToString();
                    lokacion.Nr_Kutise = Convert.ToInt32(formCollection["Nr_Kutise"]);

                    db.AAC_procedure_documents_location.Add(lokacion);
                    db.SaveChanges();
                    return RedirectToAction("Dokumenti");
                }
            }
            catch (RetryLimitExceededException /* dex */)
            {
                //Log the error (uncomment dex variable name and add a line here to write a log.
                ModelState.AddModelError("","Unable to save changes. Try again,and if the problem persists see your system administrator.");
            }
            return View(formCollection);
        }

解决方法

FormCollection的命名空间必须是System.Web.Mvc，而不是System.Windows.Forms。查看您的用法并删除System.Windows.Forms ...

FormCollection类存在于WindowsForm和Web两个技术中。