修改有问题

Question

int ID=Convert.ToInt32(this.dList.DataKeys[e.Item.ItemIndex].ToString());//取当前对应的ID号
int House=Convert.ToInt32(((TextBox)e.Item.FindControl("txtHouse")).Text.ToString());
string SerialNumber=((TextBox)e.Item.FindControl("txtSerialNumber")).Text.ToString();
string Name=((TextBox)e.Item.FindControl("txtName")).Text.ToString();
string Phone=((TextBox)e.Item.FindControl("txtPhone")).Text.ToString();
string Email=((TextBox)e.Item.FindControl("txtEmail")).Text.ToString();
string CheckInDate=Convert.ToDateTime(((TextBox)e.Item.FindControl("CheckInDate")).Text.ToString()).ToString();
string CheckOutDate=Convert.ToDateTime(((TextBox)e.Item.FindControl("CheckOutDate")).Text.ToString()).ToString();
int Confirm=Convert.ToInt32(((DropDownList)e.Item.FindControl("ddlConfirm")).SelectedValue.ToString());
string Re=((TextBox)e.Item.FindControl("txtRe")).Text.ToString();
string Datetime=Convert.ToDateTime(((TextBox)e.Item.FindControl("txtDatetime")).Text.ToString()).ToString();
Schedule updateOne=new Schedule();
             updateOne.Update(ID,House,SerialNumber,Name,Phone,Email,CheckInDate,CheckOutDate,Confirm,Re,Datetime);
this.dList.EditItemIndex=-1;
this.mfbind();
}

Answer 1

监视一下变量就行了，这种runtime错误怎么看得出来