我有一个用 C# 制作的销售点程序按下提交按钮时,它提交销售并打印发票我想为它做一个快捷方式,所以当我按下键盘上的快捷键时它确实按钮工作
这是我的按钮代码:
private void btnCompleteSalesAndPrint_Click(object sender, EventArgs e)
{
DialogResult result = MessageBox.Show("Do you want to Complete Sale and Print?nn -If you need any item [duplicate] (1 item 2 piece) n -Please Increase item Quantity n ----- by clicking + sign ", "Yes or No", MessageBoxButtons.YesNo, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2);
if (result == DialogResult.Yes)
{
if (txtPaidAmount.Text == "")
{
MessageBox.Show("Sorry ! you have not enough product n Please Purchase product or Increase Product Quantity");
// detail_info go = new detail_info();
// go.ShowDialog();
}
else
{
try
{
sales_item();
//Save payment info into sales_payment table
payment_item();
// 5 % Rewards Point add to customer Account for total Payable amount
AddCredit();
PrintPage mkc = new PrintPage();
mkc.saleno = txtInvoice.Text;
mkc.vat = txtVATRate.Text;
mkc.dis = txtDiscountRate.Text;
mkc.paidamt = txtPaidAmount.Text;
mkc.subtotal = lblsubtotal.Text;
mkc.ShowDialog();
showincrement();
ClearForm2();
}
catch (Exception exp)
{
MessageBox.Show(exp.Message);
}
}
}
}
如何在窗体上使用 KeyDown 事件?例如,假设快捷键是"E"。
private void Form1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.E)
{
btnCompleteSalesAndPrint_Click(sender, new EventArgs());
}
}
但是,这实际上不适用于多个键,因此您可能希望使用允许您检查是否按下某个键的系统。假设"CTRL"+"E"是快捷方式。使用"PresentationCore"库访问"System.Windows.Input"命名空间。
using System.Windows.Input;
//[...]
private bool ControlPressed//Returns true if the left control button or the right control button is pressed. Returns false if neither are pressed.
{
get
{
return Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl);
}
}
private bool E_Pressed//Boolean that returns true if "E" is pressed and false if it isn't.
{
get
{
return Keyboard.IsKeyDown(Key.E);
}
}
并定期检查是否按下了这些键。
public Form1()
{
InitializeComponent();
Timer timer = new Timer();//Create new instance of Timer.
timer.Interval = 1;
timer.Tick += new EventHandler(timer_Tick);//Set an eventhandler to occur after each 1000th of a second.
timer.Enabled = true;
}
private void timer_Tick(object sender, EventArgs e)
{
if (ControlPressed && E_Pressed)
{
btnCompleteSalesAndPrint_Click(sender, new EventArgs());
}
}
Codf bflow:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Windows.Input;
namespace hmmmhmh
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
Timer timer = new Timer();
timer.Interval = 1;
timer.Tick += new EventHandler(timer_Tick);
timer.Enabled = true;
}
private void timer_Tick(object sender, EventArgs e)
{
if (Control_Pressed && F_Pressed)
{
button1_Click(sender, e);
}
}
private bool Control_Pressed
{
get
{
return Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl);
}
}
private bool F_Pressed
{
get
{
return Keyboard.IsKeyDown(Key.E);
}
}
private void button1_Click(object sender, EventArgs e)
{
MessageBox.Show("hlhlh");
}
}
}