周前辈问题是有时候可以继承有时候又不可以。。。我很郁闷
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.Serialization.Formatters.Binary;
using System.IO;
namespace BillSystem
{
/// <summary>
/// 票据设计模块
/// </summary>
public partial class ContriveForm : BaseForm
{
public ContriveForm()
{
InitializeComponent();
}
public Control cl = null;
List<Point> locations = new List<Point>();//存储坐标
List<String> content = new List<string>();//存内容
String txt = "";
int x, y;
bool MouseD = false;
public MainForm mf = null;
//load事件
private void BaseForm_Load(object sender, EventArgs e)
{
Model.Click += new EventHandler(Controls_Click);
}
//设置控件
public void SetControl(Control cl)
{
Type type = cl.GetType();
if (type.Name == "TextBox")
{
TextBox temp = (TextBox)cl;
temp.Multiline = true;
}
cl.Click += new EventHandler(Controls_Click);//注册事件
cl.MouseDown += new MouseEventHandler(tb_MouseDown);
cl.MouseMove += new MouseEventHandler(tb_MouseMove);
cl.MouseUp += new MouseEventHandler(tb_MouseUp);
Model.Controls.Add(cl);
}
//控件单击事件
private void Controls_Click(object sender, EventArgs e)
{
cl = (Control)sender;
txtName.Text = cl.Name;
numWidth.Value = cl.Width;
numHeight.Value = cl.Height;
}
//位置调整
private void btn_Click(object sender, EventArgs e)
{
txt = ((Button)sender).Text;
if (cl != null)
{
setLocation();
}
}
//鼠标按下
private void btn_MouseDown(object sender, MouseEventArgs e)
{
txt = ((Button)sender).Text;
if (cl != null)
{
MoveTimer.Enabled = true;
}
}
//鼠标放开
private void btn_MouseUp(object sender, MouseEventArgs e)
{
MoveTimer.Enabled = false;
}
//快速位置移动
private void MoveTimer_Tick(object sender, EventArgs e)
{
setLocation();
}
//位置调整
private void setLocation()
{
switch (txt)
{
case "上":
cl.Location = new Point(cl.Location.X, cl.Location.Y - 1);
break;
case "下":
cl.Location = new Point(cl.Location.X, cl.Location.Y + 1);
break;
case "左":
cl.Location = new Point(cl.Location.X - 1, cl.Location.Y);
break;
case "右":
cl.Location = new Point(cl.Location.X + 1, cl.Location.Y);
break;
}
}
//打印预览
private void btnYl_Click(object sender, EventArgs e)
{
mf.PrintPreview(this);
}
//打印
private void btnPrint_Click(object sender, EventArgs e)
{
mf.Print(this);
}
//调整宽
private void numWidth_ValueChanged(object sender, EventArgs e)
{
cl.Width = Convert.ToInt32(numWidth.Value);
}
//调整高
private void numHeight_ValueChanged(object sender, EventArgs e)
{
cl.Height = Convert.ToInt32(numHeight.Value);
}
//鼠标按下
private void tb_MouseDown(object sender, MouseEventArgs e)
{
//计算位差
x = Cursor.Position.X - ((Control)sender).Location.X;
y = Cursor.Position.Y - ((Control)sender).Location.Y;
MouseD = true;
}
//移动
private void tb_MouseMove(object sender, MouseEventArgs e)
{
if (MouseD)
((Control)sender).Location = new Point(Cursor.Position.X - x, Cursor.Position.Y - y);
}
//放开
private void tb_MouseUp(object sender, MouseEventArgs e)
{
MouseD = false;
}
//选择文件
private void btnSetBg_Click(object sender, EventArgs e)
{
try
{
ofd.FileName = "";
ofd.ShowDialog();
String url = ofd.FileName;
if (url == "")
{
return;
}
Image img = Image.FromFile(url);
Rectangle rect = System.Windows.Forms.SystemInformation.VirtualScreen;
if (img.Height < 150 || img.Width < 150 || img.Width > rect.Width || img.Height > rect.Height)
{
DialogResult isok = MessageBox.Show("你选择的图片太大或太小了,这样会导致无法编辑。\n你确定要导入吗?",
"提示", MessageBoxButtons.YesNo);
if (isok != DialogResult.Yes)
return;
}
setBgImage(img);
}
catch
{
MessageBox.Show("设置背景错误,请确定文件格式正确.", "警告");
}
}
//设置背景图片
private void setBgImage(Image img)
{
this.Width = img.Width;
this.Height = img.Height + panelMenu.Height + 30;
Model.Width = img.Width - 20;
Model.Height = img.Height - 20;
Model.Location = new Point(10, 10);
this.BackgroundImage = img;
}
//添加组件
private void btnAdd_Click(object sender, EventArgs e)
{
NewControlForm ncf = new NewControlForm();
ncf.cf = this;
ncf.Show();
}
//修改组件名
private void btnUpdate_Click(object sender, EventArgs e)
{
if (txtName.Text == "")
{
MessageBox.Show("名称不能为空", "提示");
return;
}
if (cl == Model)
{
MessageBox.Show("主模板不允许修改", "提示");
return;
}
cl.Name = txtName.Text;
MessageBox.Show("修改成功", "提示");
}
//删除
private void btnDel_Click(object sender, EventArgs e)
{
if (cl == null)
{
MessageBox.Show("请先选中要删除的组件", "提示");
return;
}
else
{
if (cl == Model)
MessageBox.Show("主面板不能删除", "警告");
else Model.Controls.Remove(cl);
}
}
//打开
private void benOpen_Click(object sender, EventArgs e)
{
if (Model.Controls.Count > 0)
{
DialogResult dr=MessageBox.Show("建议您先保存当前的数据,要继续吗?", "提示", MessageBoxButtons.YesNo);
if (dr != DialogResult.Yes)
return;
}
try
{
ofd.FileName = "";
ofd.ShowDialog();
String url = ofd.FileName;
if (url == "")
{
return;
}
Model.Controls.Clear();
FileStream fs = new FileStream(url, FileMode.Open);
BinaryFormatter bf = new BinaryFormatter();
Save data = (Save)bf.Deserialize(fs);
fs.Close();
setBgImage(data.img);
Model.Location = data.ModelPoint;
Model.Size = data.ModelSize;
for (int i = 0; i < data.clName.Count; i++)
{
Control c = getControl(data.clType[i], data.clName[i]);
c.Location = new Point(data.clPoint[i].X, data.clPoint[i].Y);
c.Size = data.clSize[i];
c.TabIndex = i+1;
SetControl(c);
}
}
catch (Exception ex)
{
MessageBox.Show("打开文件失败,原因:" + ex.Message, "提示");
}
}
//保存
private void btnSave_Click(object sender, EventArgs e)
{
saveFD.ShowDialog();
if (saveFD.FileName == "") return;
Save sa = new Save();
sa.save(this);
}
//创建控件
public Control getControl(String type,String name)
{
switch (type)
{
case "TextBox":
TextBox tb = new TextBox();
if (name == "年") tb.Text = DateTime.Today.Year.ToString();
if (name == "月") tb.Text = DateTime.Today.Month.ToString();
if (name == "日") tb.Text = DateTime.Today.Day.ToString();
tb.Name = name;
return tb;
case "CheckBox":
CheckBox cb = new CheckBox();
cb.UseVisualStyleBackColor = true;
cb.AutoSize = true;
cb.Name = name;
return cb;
}
return null;
}
}
}
下面是继承的
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;
namespace BillSystem
{
public partial class BaseForm : Form
{
public BaseForm()
{
InitializeComponent();
}
Point p;
private void BaseForm_Load(object sender, EventArgs e)
{
p = pnMenu.Location;
}
private void BaseForm_Scroll(object sender, ScrollEventArgs e)
{
pnMenu.Location = p;
}
}
}
遇到个c#问题请高人指引“若要在加载设计器前避免可能发生的数据丢失，必须纠正以下错误: ”
