Question

我正在做一个作业，我必须在Web表单中填写信息，然后将该信息插入本地数据库，但是Webform上的一个字段与数据库中的另一个表相关联，并且我不确定如何实现可以执行此操作的联接。

我的数据库：

玩家 -（PK）玩家ID - 选手姓名 -JerseyNumber

统计 -（PK）StatId -玩家编号 -玩过的比赛 -比赛获胜 -助攻 -目标 -点数

我的WebForm请求：

玩家名称-下拉菜单，进行过的比赛-文本框，比赛获胜-文本框，辅助-文字框，目标-文字框，添加按钮

这里是按钮单击事件中的内容

tblStatistic = (DataTable)Cache["tbl"];

            DataRow newRow = tblStatistic.NewRow();
            newRow["StatID"] = 0;

            newRow["MatchesPlayed"] = txtMatchesPlayed.Text;
            newRow["MatchesWon"] = txtMatchesWon.Text;
            newRow["Assists"] = txtAssists.Text;
            newRow["Goals"] = txtGoals.Text;
            tblStatistic.Rows.Add(newRow);

            adapter.InsertCommand = cmdBuilder.GetInsertCommand();
            int rowsAffected = adapter.Update(tblStatistic);

            if (rowsAffected == 1)
            {
                lblMessage.Text = "Stats inserted";
                lblMessage.ForeColor = System.Drawing.Color.Green;
            }
            else
            {
                lblMessage.Text = "Stat not inserted";
                lblMessage.ForeColor = System.Drawing.Color.Red;
            }

我得到的错误是“ PlayerId不允许为空”。

Answer 1

if you want to add row in Statistic  you have to pass id of player as a FK 
just add this line to your code i hope it works
   newRow["PlayerID"] = int.parse(drpPlayer.selectedvalue);

it will be :
tblStatistic = (DataTable)Cache["tbl"];

            DataRow newRow = tblStatistic.NewRow();
            newRow["StatID"] = 0;
            newRow["PlayerID"] = int.parse(drpPlayer.selectedvalue);
            newRow["MatchesPlayed"] = txtMatchesPlayed.Text;
            newRow["MatchesWon"] = txtMatchesWon.Text;
            newRow["Assists"] = txtAssists.Text;
            newRow["Goals"] = txtGoals.Text;
            tblStatistic.Rows.Add(newRow);



            adapter.InsertCommand = cmdBuilder.GetInsertCommand();
            int rowsAffected = adapter.Update(tblStatistic);

            if (rowsAffected == 1)
            {
                lblMessage.Text = "Stats inserted";
                lblMessage.ForeColor = System.Drawing.Color.Green;
            }
            else
            {
                lblMessage.Text = "Stat not inserted";
                lblMessage.ForeColor = System.Drawing.Color.Red;
            }

从网络表格中插入具有不同表中值字段的值的

1 个答案: