分享关于Button的一点小小小经验
在form2.load事件里 自动生动N个 button ，button的名称为 MyButton0001,MyButton0002.... 把button加到GroupBox里,button单击事件为Mybutton_click(), 单击事件 是调用 form3 窗口. form3窗口关闭后会返回Boolean 值，根据Boolean值来判断Button是否可用。可以使用。但是
我在form2的窗体上加了一个菜单,其中有一个下拉菜单调用 form9窗体， 当form9窗体关闭后调用一个 字符串，比如“0001”，利用这个字符串 生动一个Button, Button b1 = new Button(); b1.name="MyButton"+"0001" (form9窗体关闭后调用一个 字符串) ，b1.enable=true/false; 问题出在这里，无论 b1.enable = true/false; GroupBox 里和刚刚创建的Button，虽然同名，但两个互不影响。
解决方法：
在form2 里定义一个 public object buttonsender; 在GroupBox 里自动生成Button的事件里把 sender 赋值给 buttonsender
在 form9 窗体关闭后 判断 buttonsender 是否为空. 不为空就 Button b1 = (Button)buttonsender. b1.enable=true/false;
ok，解决关闭。
问题不大，但出现了用了一个小时才弄明白，小弟新手，贴出来分享，希望有用。
using System;
using System.Threading;
using System.Collections.Generic;
using
using System.Data;
using System.Data.OleDb;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace FaPiao
{
public partial class Form2 : Form
{
public string glyy,ttth;
public object buttonsender=null;
public int numms=0;
//public Button[] b;
public Form2()
{
InitializeComponent();
}
private void 退出ToolStripMenuItem_Click(object sender, EventArgs e)
{
Close();
}
private void 设置ToolStripMenuItem_Click(object sender, EventArgs e)
{
}
private void 打印设置ToolStripMenuItem_Click(object sender, EventArgs e)
{
Form3 myfm3 = new Form3();
(this.glyy);
= this.glyy;
myfm3.ShowDialog();
if (myfm3.thnums!=string.Empty)
{
Button b1 = new Button();
Mydata mydata1 = new Mydata();
b1.Name = "MyButton" + myfm3.thnums ;
b1.Enabled = mydata1.truebutton(myfm3.thnums);
mydata1.closedb();
}
}
private void 帮助ToolStripMenuItem1_Click(object sender, EventArgs e)
{
Form4 myfm4 = new Form4();
myfm4.ShowDialog();
}
private void 添加用户ToolStripMenuItem_Click(object sender, EventArgs e)
{
Form6 myform = new Form6();
myform.ShowDialog();
}
private void 查询数据ToolStripMenuItem_Click(object sender, EventArgs e)
{
Form5 myform5 = new Form5();
myform5.ShowDialog();
}
private void 账单修改ToolStripMenuItem1_Click(object sender, EventArgs e)
{
Form7 myform7 = new Form7();
myform7.ShowDialog();
}
private void button5_Click(object sender, EventArgs e)
{
}
private void button6_Click(object sender, EventArgs e)
{
}
private void 打印机设置ToolStripMenuItem_Click(object sender, EventArgs e)
{
Form8 myfrm = new Form8();
myfrm.ShowDialog();
}
private void myButton_Click(object sender, EventArgs e)
{
buttonsender = sender;
Button b1 =(Button)sender;
// MessageBox.Show(b1.Name.ToString());
Form3 myfrm = new Form3();
myfrm.textBox1.Text = b1.Text;
(this.glyy);
= this.glyy;
myfrm.ShowDialog();
Mydata mydata1 = new Mydata();
b1.Enabled = ( mydata1.truebutton(b1.Text) );
mydata1.closedb();
}
private void scbuttontwo(int qss,int zs)
{
Mydata mydata1 = new Mydata();
int numx, numy, numrow, numcol, numsum;
numrow = groupBox5.Height / 33;
numcol = groupBox5.Width / 85;
numx = 1; numy = 1;
numsum = qss;
// Button[] b = new Button[zs-qss+1- get_button_num(qss,zs)+50];
for (int i = 1; i < numrow; i++)
{
for (int j = 1; j < numcol; j++)
{
if (numsum <= zs)
{
string strlen;
if (( numsum.ToString().Substring(numsum.ToString().Length-1) )=="4")
{
numsum += 1;
}
Button b = new Button();
// b.Text = "第" + numsum.ToString() + "台桌";
switch (numsum.ToString().Length)
{
case 1: strlen = "000" + numsum.ToString(); break;
case 2: strlen = "00" + numsum.ToString(); break;
case 3: strlen = "0" + numsum.ToString(); break;
default: strlen = numsum.ToString(); break;
}
b.Name ="MyButton"+ strlen;
// b[numsum].Name = strlen;
b.Text = strlen;
b.Enabled = mydata1.truebutton(strlen);
numx = (i * 23 + i * 10);
numy = (75 * j + j * 10);
if (numx <= groupBox5.Left)
{
b.Location = new Point(numy, numx);
// b.Location = new Point((i * 75 + i * 10), 23 + i * 10);
this.groupBox5.Controls.Add(b);
}
b.Click += new EventHandler(myButton_Click);
numsum += 1;
}
else
{
numsum += 1;
}
}
}
mydata1.closedb();
// MessageBox.Show(numrow.ToString(),numcol.ToString());
}
private void Form2_Load(object sender, EventArgs e)
{
// ThreadStart ths = new ThreadStart(scbutton);
// Thread thread = new Thread(ths);
// thread.Start();
// Thread.Sleep(2000);
int[] cs_lh1 = new int[2];
int[] cs_lh2 = new int[2];
cs_lh1 = csh_th("一楼","一楼表");
cs_lh2 = csh_th("二楼","二楼表");
scbuttonone(cs_lh1[0], cs_lh1[1]);
scbuttontwo(cs_lh2[0], cs_lh2[1]);
// MessageBox.Show(glyy);
trueqx(glyy);
// MessageBox.Show(System.DateTime.Now.ToString("yyyy-MM-dd").Substring(0,10));
}
private void 账单结算ToolStripMenuItem_Click(object sender, EventArgs e)
{
Form9 myfrm = new Form9();
myfrm.ShowDialog();
if (myfrm.taihaonum != string.Empty && buttonsender!=null)
{
Button b = (Button)buttonsender;
Mydata mydata1 = new Mydata();
b.Enabled = mydata1.truebutton(myfrm.taihaonum);
mydata1.closedb();
}
}
private void trueqx(string glyy1)
{
Mydata mydata1 = new Mydata();
添加用户ToolStripMenuItem.Enabled = mydata1.getqxnum(glyy);
账单修改ToolStripMenuItem1.Enabled = mydata1.getqxnum(glyy);
账单结算ToolStripMenuItem.Enabled = mydata1.getqxnum(glyy);
帮助ToolStripMenuItem1.Enabled = mydata1.getqxnum(glyy);
台号设置ToolStripMenuItem.Enabled = mydata1.getqxnum(glyy);
mydata1.closedb();
}
private void toolStripMenuItem3_Click(object sender, EventArgs e)
{
Form10 myfrm = new Form10();
myfrm.textBox6.Text = this.glyy;
myfrm.ShowDialog();
}
private int[] csh_th(string loushu,string tabstr)
{
Mydata mydata1 = new Mydata();
DataSet ds = mydata1.taihaonumber(loushu,tabstr);
int[] shuzu = new int[2];
shuzu[0] = Int32.Parse( ds.Tables[tabstr].Rows[0][0].ToString());
shuzu[1] = Int32.Parse(ds.Tables[tabstr].Rows[0][1].ToString());
return shuzu;
}
private void scbuttonone(int qss, int zs)
{
Mydata data1 = new Mydata();
int numx, numy, numrow, numcol, numsum;
numrow = groupBox4.Height / 33;
numcol = groupBox4.Width / 83;
numx = 1; numy = 1;
numsum = qss;
for (int i = 1; i <numrow ; i++)
{
for (int j = 1; j < numcol; j++)
{
if (numsum <= zs )
{
string strlen;
if ((numsum.ToString().Substring(numsum.ToString().Length - 1)) == "4")
{
numsum += 1;
}
Button b = new Button();
// b.Name = "mybutton" + numsum.ToString();
// b.Text = "第" + numsum.ToString() + "台桌";
switch (numsum.ToString().Length)
{
case 1: strlen = "000" + numsum.ToString(); break;
case 2: strlen = "00" + numsum.ToString(); break;
case 3: strlen = "0" + numsum.ToString(); break;
default: strlen = numsum.ToString(); break;
}
b.Name ="MyButton"+ strlen;
b.Text = strlen;
b.Enabled= data1.truebutton(strlen);
if (j == 1)
{
numx = (15 * j );
numy = (i * 30 );
}
else
{
numx = (15 * j + (j-1)*70);
numy = (i * 30 );
}
//MessageBox.Show(numx.ToString(),numy.ToString());
//MessageBox.Show(groupBox4.Left.ToString());
if (numy <= groupBox4.Width-75)
{
b.Location = new Point(numx, numy);
// b.Location = new Point((i * 75 + i * 10), 23 + i * 10);
this.groupBox4.Controls.Add(b);
}
b.Click += new EventHandler(myButton_Click);
numsum += 1;
}
else
{
numsum += 1;
}
}
}
data1.closedb();
// MessageBox.Show(numrow.ToString(),numcol.ToString());
}
private void 台号设置ToolStripMenuItem_Click(object sender, EventArgs e)
{
Form12 myfrm = new Form12();
myfrm.ShowDialog();
}
private int get_button_num(int qss, int zs)
{
for (int i = qss; i <= zs; i++)
{
if ((i.ToString().Substring(i.ToString().Length - 1)) == "4")
{
numms += 1;
}
}
return numms;
}
private void 帮助ToolStripMenuItem3_Click(object sender, EventArgs e)
{
AboutBox1 mf = new AboutBox1();
mf.ShowDialog();
}
}
}
