private void Dgv_borrow_CellClick(object sender, DataGridViewCellEventArgs e)
{
if (e.ColumnIndex >= 0)
{
DialogResult dialog;//获得对话框的用户所按的返回值
if (e.RowIndex >= 0)
{
string bo_renew = Dgv_borrow.Rows[e.RowIndex].Cells["Cl_renew"].Value.ToString(); //获得续借资格值
string bo_id = Dgv_borrow.Rows[e.RowIndex].Cells["Cl_id"].Value.ToString(); //获得借书编号
string bo_eme = Dgv_borrow.Rows[e.RowIndex].Cells["Cl_eme"].Value.ToString(); //获得借书状态
string bo_emeover = Dgv_borrow.Rows[e.RowIndex].Cells["Cl_emeover"].Value.ToString(); //获得是否逾期一栏的值
if (Dgv_borrow.Columns[e.ColumnIndex].Name == "Cl_Renewal") //续借按钮
{
if (bo_renew == "无")
{
dialog = MessageBox.Show("抱歉，你该图书的续借资格已经没有了", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Error);
}
else if (bo_emeover == "已逾期")
{
//错误提示
dialog = MessageBox.Show("所续借图书已经逾期，无法续借！\n点击确认跳转到逾期界面", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Error);
if (DialogResult.OK == dialog)
{
//点击确认按钮跳转到逾期记录
user_OverduePage user_Overdue = new user_OverduePage(); //实例化逾期记录界面
user_Overdue.ShowDialog(); //以对话模式显示
//查询全部，这里等于返回该界面刷新
string sql = "select * from V_Borrow where u_id='" + Log.log.u_id + "'";
databind(sql); //传递sql语句
}
}
else if (bo_emeover == "审核中")
{
dialog = MessageBox.Show("所续借图书正在审核中，无法续借", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else if (bo_emeover == "缴费审核中")
{
dialog = MessageBox.Show("所续借图书逾期缴费正在审核中，无法续借！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else if (bo_eme == "还书成功")
{
dialog = MessageBox.Show("所续借图书已经归还，无法续借！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else if (bo_eme == "审核中")
{
dialog = MessageBox.Show("所续借图书正在审核，无法续借！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else
{
dialog = MessageBox.Show("确定续借7天？", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Question);
if (DialogResult.OK == dialog)
{
//创建sql语句
string sql = "update borrow set bo_rtnatl=dateadd(day,7,bo_rtnatl),bo_renew='1' where bo_id='" + bo_id + "'";
con = dButil.SqlOpen(); //打开数据库
cmd = new SqlCommand(sql, con); //储存sql语句
int n = cmd.ExecuteNonQuery(); //执行sql语句，返回受影响的行数赋值到n中，用于判断
con.Close(); //关闭数据库
if (n > 0) //进行成功判断
{
//成功提示
MessageBox.Show("续借成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
//查询全部，这里等于刷新
sql = "select * from V_Borrow where u_id='" + Log.log.u_id + "'";
databind(sql);//传递sql语句
}
else
{
//失败提示
MessageBox.Show("续借失败！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
}
if (Dgv_borrow.Columns[e.ColumnIndex].Name == "Cl_operation")//还书按钮
{
if (bo_emeover == "已逾期")
{
//错误提示
dialog = MessageBox.Show("所还图书已经逾期，无法还书！\n点击确认跳转到逾期界面", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Error);
if (DialogResult.OK == dialog)
{
//点击确认按钮跳转到逾期记录
user_OverduePage user_Overdue = new user_OverduePage(); //实例化逾期记录界面
user_Overdue.ShowDialog(); //以对话模式显示
//查询全部，这里等于返回该界面刷新
string sql = "select * from V_Borrow where u_id='" + Log.log.u_id + "'";
databind(sql); //传递sql语句
}
}
else if (bo_emeover == "缴费审核中")
{
dialog = MessageBox.Show("所续借图书逾期缴费正在审核中，无法还书！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else if (bo_emeover == "缴费审核未通过")//判断缴费
{
dialog = MessageBox.Show("所续借图书逾期缴费审核未通过，无法还书！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else if (bo_eme == "还书成功")//判断缴费
{
dialog = MessageBox.Show("该书已经归还，无法再次进行还书！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else if (bo_eme == "审核中")//判断缴费
{
dialog = MessageBox.Show("该书正在审核，请勿再次提交审核！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else if (bo_emeover == "还书失败")
{
//错误提示
dialog = MessageBox.Show("所还图书未通过审核，是否再次申请？", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Error);
if (DialogResult.OK == dialog)
{
//创建sql语句
string sql = "update borrow set bo_rtnatl=getdate(),bo_eme=1 where bo_id='" + bo_id + "'";
con = dButil.SqlOpen(); //打开数据库
cmd = new SqlCommand(sql, con); //储存sql语句
int n = cmd.ExecuteNonQuery(); //执行sql语句，返回受影响的行数赋值到n中，用于判断
con.Close(); //关闭数据库
if (n > 0) //进行成功判断
{
//成功提示
MessageBox.Show("重新提交审核成功，请耐心等待管理员审核！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
//查询全部，这里等于刷新
sql = "select * from V_Borrow where u_id='" + Log.log.u_id + "'";
databind(sql);//传递sql语句
}
else
{
//失败提示
MessageBox.Show("提交失败！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
else
{
dialog = MessageBox.Show("确定归还该书？", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Question);
if (DialogResult.OK == dialog)
{
//创建sql语句
string sql = "update borrow set bo_rtnatl=getdate(),bo_eme=1 where bo_id='" + bo_id + "'";
con = dButil.SqlOpen(); //打开数据库
cmd = new SqlCommand(sql, con); //储存sql语句
int n = cmd.ExecuteNonQuery(); //执行sql语句，返回受影响的行数赋值到n中，用于判断
con.Close(); //关闭数据库
if (n > 0) //进行成功判断
{
//成功提示
MessageBox.Show("提交审核成功，请耐心等待管理员审核！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
//查询全部，这里等于刷新
sql = "select * from V_Borrow where u_id='" + Log.log.u_id + "'";
databind(sql);//传递sql语句
}
else
{
//失败提示
MessageBox.Show("还书失败！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
}
}
}
}
//逾期记录按钮事件
private void btn_overdue_Click(object sender, EventArgs e)
{
user_OverduePage user_Overdue = new user_OverduePage(); //实例化逾期记录窗体对象
user_Overdue.ShowDialog(); //显示的逾期记录窗体设置为活动窗体
}