protected void DetailsView7_ItemInserting(object sender, DetailsViewInsertEventArgs e) //answer表插入判断
{
StudentManager stu = new StudentManager();
ProblemManager p = new ProblemManager();
if (e.Values["student"] == null || e.Values["problem"] == null)
{
ScriptManager.RegisterClientScriptBlock(UpdatePanel1, this.GetType(), "msg1", "alert('插入失败！answer表中Student，prob字段不能为空');", true);
e.Cancel = true;
return;
}
if (stu.GetStudent(e.Values["student"].ToString()) == null)
{
ScriptManager.RegisterClientScriptBlock(UpdatePanel1, this.GetType(), "msg1", "alert('插入失败！answer表中外键student字段不存在');", true);
e.Cancel = true;
return;
}
if (p.GetProblemById(int.Parse(e.Values["problem"].ToString())) == null)
{
ScriptManager.RegisterClientScriptBlock(UpdatePanel1, this.GetType(), "msg1", "alert('插入失败！answer表中外键problem字段不存在');", true);
e.Cancel = true;
return;
}
}