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BadRequest Cannot implicitly convert type Microsoft.AspNetCore.Mvc.BadRequestObjectResult

04.02.2023 (👁4697)

Controller Error: BadRequest Cannot implicitly convert type 'Microsoft.AspNetCore.Mvc.BadRequestObjectResult' to 'Models..'

 

 

Severity

Code

Description

Error

CS0029

Cannot implicitly convert type 'Microsoft.AspNetCore.Mvc.BadRequestObjectResult' to 'Models.ArticleModel'

Beim Verwenden on Results wie BadRequest oder OK entsteht ein Fehler

In Asp.Net Core C# MVC

 

Fehlerhafter Code oder zu verbessern

// PUT api/<ArticlesController>/5

        //=Upadate

        [HttpPut("{id}")]

        //public void Put(int id, [FromBody] string value)

        public async Task<ArticleModel> Update_Article(ArticleModel article)

        {

            //*get matching Article from Database by ID

            var dbArticle = await _dbContext.tbl_Articles.FindAsync(article.IDArticle);

            //*check

            if (article == null) return BadRequest("Article not found");

 

 

            _dbContext.tbl_Articles.Add(article);

            await _dbContext.SaveChangesAsync();

 

 

            return dbArticle;

        }

 

 

Lösung:

Man muss bei der Funktion das Rückgabe-Objekt in Task<Actionresult<..>> kapseln

        [HttpPut("{id}")]

        public async Task<ActionResult<ArticleModel>> Update_Article(ArticleModel article)

        {

            //*get matching Article from Database by ID

            var dbArticle = await _dbContext.tbl_Articles.FindAsync(article.IDArticle);

            //*check

            if (article == null) return BadRequest("Article not found");

 

 

            _dbContext.tbl_Articles.Add(article);

            await _dbContext.SaveChangesAsync();

 

 

            return dbArticle;

       

        }

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