输入字符串格式错误不正确 [英] Input String was not in correct format error
本文介绍了输入字符串格式错误不正确的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
if (Conversion.Val(txtSubTotal.Text) < Conversion.Val(txtAdvance.Text) || Conversion.Val(txtSubTotal.Text) == Conversion.Val(txtAdvance.Text))
{
Interaction.MsgBox("Guest Successfully Checkin! " + "Change: N " + Conversion.Val(System.Convert.ToInt32(Conversion.Val(txtAdvance.Text) - Conversion.Val(txtSubTotal.Text))).ToString("00.00"), Constants.vbInformation, "Check In");
string change = System.Convert.ToString(Interaction.MsgBox("Return change to customer?", (int)Constants.vbQuestion + Constants.vbYesNo, "Change"));
if (change == Constants.vbYes.ToString())
{
OleDbCommand update_trans = new OleDbCommand("UPDATE tblTransaction SET AdvancePayment = " + Conversion.Val(txtSubTotal.Text) + " WHERE TransID = " + trans_ID.ToString() + "", Module1.con);
update_trans.ExecuteNonQuery();
}
}
else
{
Interaction.MsgBox("Guest Successfully Checkin!", Constants.vbInformation, "Check In");
}
clear_text();
Module1.con.Close();
transID();
display_checkin();
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推荐答案
尝试
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OleDbCommand update_trans = new OleDbCommand("UPDATE tblTransaction SET AdvancePayment = " + Conversion.Val(txtSubTotal.Text) + " WHERE TransID = '" + trans_ID.ToString() + "'", Module1.con);
public void bttnCheckIn_Click_1(System.Object sender, System.EventArgs e)
{
int children = (int)(Conversion.Val(txtChildren.Text));
int adult = (int)(Conversion.Val(txtAdults.Text));
int advance = (int)(Conversion.Val(txtAdvance.Text));
int discount = (int)(Conversion.Val(lblDiscountID.Text));
string reserve = "0";
string remarks = "Checkin";
string stat = "Active";
if (lblGuestID.Text == "GuestID" || lblGuestID.Text == null || txtRoomNumber.Text == null || Conversion.Val(System.Convert.ToString(children + adult)) == null || advance == null || discount == null)
{
Interaction.MsgBox("Please Fill All Fields", Constants.vbInformation, "Note");
}
else
{
if (Conversion.Val(System.Convert.ToString(Conversion.Val(txtSubTotal.Text) * 0.5)) > Conversion.Val(txtAdvance.Text))
{
MessageBox.Show("Ops");
return;
}
string a = System.Convert.ToString(Interaction.MsgBox("Confirm Checkin Transaction?", (int)Constants.vbQuestion + Constants.vbYesNo, "Check In"));
if (a == Constants.vbYes.ToString())
{
Module1.con.Open();
OleDbCommand checkin = new OleDbCommand("INSERT INTO tblTransaction(GuestID,RoomNum,CheckInDate,CheckOutDate,NoOfChild,NoOfAdult,AdvancePayment,DiscountID,Remarks,Status) values (\'" +
lblGuestID.Text + "\',\'" +
txtRoomNumber.Text + "\',\'" +
txtCheckInDate.Text + "\',\'" +
dtCheckOutDate.Text + "\',\'" +
txtChildren.Text + "\',\'" +
txtAdults.Text + "\',\'" +
txtAdvance.Text + "\',\'" +
lblDiscountID.Text + "\',\'" +
remarks + "\',\'" +
stat + "\')", Module1.con);
checkin.ExecuteNonQuery();
OleDbCommand update_guest = new OleDbCommand("UPDATE tblGuest SET Remarks = \'Checkin\' WHERE ID = " + lblGuestID.Text + "", Module1.con);
update_guest.ExecuteNonQuery();
OleDbCommand update_room = new OleDbCommand("UPDATE tblRoom SET Status = \'Occupied\' WHERE RoomNumber = " + txtRoomNumber.Text + "", Module1.con);
update_room.ExecuteNonQuery();
if (Conversion.Val(txtSubTotal.Text) < Conversion.Val(txtAdvance.Text) || Conversion.Val(txtSubTotal.Text) == Conversion.Val(txtAdvance.Text))
{
Interaction.MsgBox("Guest Successfully Checkin! " + "Change: N " + Conversion.Val(System.Convert.ToString(Conversion.Val(txtAdvance.Text) - Conversion.Val(txtSubTotal.Text))).ToString("00.00"), Constants.vbInformation, "Check In");
string change = System.Convert.ToString(Interaction.MsgBox("Return change to customer?", (int)Constants.vbQuestion + Constants.vbYesNo, "Change"));
if (change == Constants.vbYes.ToString())
{
OleDbCommand update_trans = new OleDbCommand("UPDATE tblTransaction SET AdvancePayment = " + Conversion.Val(txtSubTotal.Text) + " WHERE TransID = '" + trans_ID.ToString() + "'", Module1.con);
update_trans.ExecuteNonQuery();
}
}
else
{
Interaction.MsgBox("Guest Successfully Checkin!", Constants.vbInformation, "Check In");
}
clear_text();
Module1.con.Close();
transID();
display_checkin();
}
}
}
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