form1.cs

C#2.0宝典源码,C#经典书籍,很多例子

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace Example19_1
{
    public partial class frmMain : Form
    {
        public frmMain()
        {
            InitializeComponent();
        }

        //新建工具栏按钮事件
        private void toolStripNew_Click(object sender, EventArgs e)
        {
            frmEdit frm = new frmEdit();
            //使新建的Form2窗体的父窗体为当前窗体
            frm.MdiParent = this;
            ToolStripMenuItem newWindowItem = new ToolStripMenuItem(frm.Text);
            mnuWindows.DropDownItems.Add(newWindowItem);
            frm.Show();

        }

        private void mnuCascade_Click(object sender, EventArgs e)
        {
            //层叠窗口
            this.LayoutMdi(MdiLayout.Cascade);
        }

        private void mnuVerticle_Click(object sender, EventArgs e)
        {
            //垂直平铺
            this.LayoutMdi(MdiLayout.TileVertical);
        }

        private void mnuHorizontal_Click(object sender, EventArgs e)
        {
            //水平平铺
            this.LayoutMdi(MdiLayout.TileHorizontal);
        }

        private void toolStripButtonOpen_Click(object sender, EventArgs e)
        {
            //设置标题
            openFileDialog.Title = "我的记事本－－打开文件对话框";

            //设置目录
            string dir = @"C:\";
            openFileDialog.InitialDirectory = dir;

            //设置过滤器
            string filter = "文本文件(*.txt)|*.txt";
            openFileDialog.Filter = filter;

            //限制多选
            openFileDialog.Multiselect = false;

            //显示对话框
            if (openFileDialog.ShowDialog() == DialogResult.Cancel)
            {
                return;
            }
            else
            {
                //新建编辑窗体并使其标题为打开的文件名
                frmEdit frm = new frmEdit();
                frm.Text = openFileDialog.FileName;

                //读取文件的内容
                StreamReader sr = new StreamReader(openFileDialog.OpenFile());
                frm.RichTextBoxText = sr.ReadToEnd();

                //显示窗体为MDI子窗体
                frm.MdiParent = this;
                frm.Show();
            }
        }

        private void toolStripSave(object sender, EventArgs e)
        {
            if (this.MdiChildren.Length == 0)
            {
                return;
            }
            //设置标题
            saveFileDialog.Title = "我的记事本－－保存文件对话框";

            //设置过滤器
            string filter = "文本文件(*.txt)|*.txt";
            saveFileDialog.Filter = filter;

            //设置目录
            string dir = @"C:\";
            saveFileDialog.InitialDirectory = dir;

            if (saveFileDialog.ShowDialog() == DialogResult.Cancel)
            {
                return;
            }
            else
            {
                //保存文件
                Stream stream = saveFileDialog.OpenFile();
                StreamWriter sw = new StreamWriter(stream);
                frmEdit frm = (frmEdit)this.ActiveMdiChild;
                sw.Write(frm.RichTextBoxText);
            }
        }

        private void toolStripPrint_Click(object sender, EventArgs e)
        {
            //没有要打开的文档，返回
            if (MdiChildren.Length == 0)
            {
                return;
            }

            //点击打印时打印文档
            if (printDialog.ShowDialog() == DialogResult.Cancel)
            {
                return;
            }
            else
            {
                //打印文档方法，PrintDocument.Print
                printDocument.Print();
            }
        }

        private void toolStripPrintPreview_Click(object sender, EventArgs e)
        {
            //没有要打开的文档，返回
            if (MdiChildren.Length == 0)
            {
                return;
            }

            //设置预览窗口关联的PrintDocument
            printPreviewDialog.Document = printDocument;
            //显示打印预览窗口
            printPreviewDialog.ShowDialog();
        }

        private void printDocument_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            //将要打印的文本输出至PrintDocument
            e.Graphics.DrawString(text, new Font("Arial", 10), Brushes.Black, 20, 20);
        }

        private void printDocument_BeginPrint(object sender, System.Drawing.Printing.PrintEventArgs e)
        {
            //获得要打印的文本
            text = ((frmEdit)ActiveMdiChild).RichTextBoxText;
        }

        private string text = string.Empty;

        private void toolStripFont_Click(object sender, EventArgs e)
        {
            if (MdiChildren.Length == 0)
            {
                return;
            }
            else
            {
                if (fontDialog.ShowDialog() == DialogResult.Cancel)
                {
                    return;
                }
                else 
                {
                }
            }
        }

        private void toolStripColor_Click(object sender, EventArgs e)
        {
            if (MdiChildren.Length == 0)
            {
                return;
            }
            else
            {
                if (colorDialog.ShowDialog() == DialogResult.Cancel)
                {
                    return;
                }
                else
                {
                }
            }
        }
    }
}