如何更新实体框架中的行6。

问题描述

我需要更新包含许多列的实体行。

我们不能直接修改或简单的方法更新行。



我尝试了什么：

I need to update entity row with many columns on it.
Can't we modify directly or simple method to update the row.

What I have tried:

public static GlobalMessage ModifyCMEmailType(CMEmailType cMEmailType)
        {
            if (cMEmailType != null)
            {
                try
                {
                    var e = Db.CMEmailTypes.Where(p => p.CMEmailTypeId == cMEmailType.CMEmailTypeId).SingleOrDefault();
                    e.EmailType = cMEmailType.EmailType;
..
..
..
..
..
..
..



                    Db.SaveChanges();
                    return new GlobalMessage("", GlobalEnum.MessageStatus.Success, GlobalEnum.MessageCss.Success);
                }
                catch (Exception ex)
                {
                    ErrorWriter.WriteError(ex, "FunctionName --> InsertTable", "");
                }
            }
            return new GlobalMessage("", GlobalEnum.MessageStatus.Error, GlobalEnum.MessageCss.Error);
        }

推荐答案

Now it depends on if you want to update entire row or what. Usually we assign properties like you are doing but we can also assign whole object to fetched object like
              e = cMEmailType;
but do need to update the ID again.

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