在 INSERT 上返回 ID?

问题描述

我有一个 INSERT 查询，我希望数据库返回我刚刚插入的行的 ID.

I have an INSERT query and I want the DB to return the ID of the row I just inserted.

sqlString = "INSERT INTO MagicBoxes (OwnerID, Key, Name, Permissions, Active, LastUpdated) VALUES (@OwnerID, @BoxKey, @BoxName, 0, 1, @Date) SET @ID = SCOPE_IDENTITY();";
cmd = new SqlCommand(sqlString, con);
cmd.Parameters.AddWithValue("@OwnerID", OwnerID);
cmd.Parameters.AddWithValue("@BoxKey", BoxKey);
cmd.Parameters.AddWithValue("@BoxName", BoxName);
cmd.Parameters.AddWithValue("@Username", Username);
cmd.Parameters.AddWithValue("@Date", DateTime.Now);
cmd.ExecuteNonQuery();

我目前有这个，我不确定接下来我需要做什么......

I currently have this, I'm not sure what I need to do next...

推荐答案

你只需要在params集合中添加@ID，然后像这样检索它，

You just need to add @ID to the params collection and then retrieve it like this,

cmd.Parameters.Add("@ID", SqlDbType.Int, 4).Direction = ParameterDirection.Output;
cmd.ExecuteNonQuery();
//Now just read the value of: cmd.Parameters["@ID"].value

或者，如果您更喜欢这种语法:

Or, if you prefer this syntax:

SqlParameter param = new SqlParameter("@ID", SqlDbType.Int, 4);
param.Direction = ParameterDirection.Output;
cmd.Parameters.Add(param);

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