引用網址:https://www.cnblogs.com/bridgew/p/12709063.html
![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLiAzNfRHLGZkRGZkRfJ3bs92YsYTMfVmepNHLsR2RaBnSullcGdlW5pkMMBjVtJWd0ckW65UbM5WOHJWa5kHT20ESjBjUIF2X0hXZ0xCMx81dvRWYoNHLrdEZwZ1Rh5WNXp1bwNjW1ZUba9VZwlHdssmch1mclRXY39CXldWYtlWPzNXZj9mcw1ycz9WL49zZuBnL4YjM1MzNxkDM2IjMwAjMwIzLc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
ps:三者差別,推薦博文:https://blog.csdn.net/u010191243/article/details/44755977?utm_source=copy
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<code>//根據主鍵查詢</code>
<code>T_EF t_EF1 = bridgeContext.T_EF.Find(1);</code>
<code>//根據TSQL查詢</code>
<code>DbSqlQuery<T_EF> dbSqlQuery = bridgeContext.T_EF.SqlQuery(</code><code>"select * from [T_EF] where [ID] = {0}"</code><code>, 2);</code>
<code>//修改資料,需先查出實體,再修改儲存</code>
<code>t_EF1.Location = </code><code>"GD"</code><code>;</code>
<code>bridgeContext.SaveChanges();</code>
<code>//删除資料也需先查出後删除再儲存</code>
<code>bridgeContext.T_EF.RemoveRange(dbSqlQuery);</code>