form1.cs

Csharp实例编程百例.rar

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

namespace EditerApp
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.MainMenu mainMenu1;
		private System.Windows.Forms.MenuItem menuItem1;
		private System.Windows.Forms.MenuItem menuItem2;
		private System.Windows.Forms.MenuItem menuItem3;
		private System.Windows.Forms.MenuItem menuItem4;
		private System.Windows.Forms.MenuItem menuItem5;
		private System.Windows.Forms.MenuItem menuItem6;
		private System.Windows.Forms.MenuItem menuItem7;
		private System.Windows.Forms.OpenFileDialog openFileDialog1;
		private System.Windows.Forms.SaveFileDialog saveFileDialog1;
		private System.Windows.Forms.RichTextBox MyRTBox;
		private System.Windows.Forms.StatusBar MyStatus;
		private System.Windows.Forms.MenuItem menuItem8;
		private System.Windows.Forms.MenuItem menuItem9;
		private System.Windows.Forms.MenuItem menuItem10;
		private System.Windows.Forms.MenuItem menuItem11;
		private System.Drawing.Printing.PrintDocument MyPrintDC;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		private StringReader MySReader; //字符串流对象，一行一行读取文本

		public Form1()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			this.MyRTBox = new System.Windows.Forms.RichTextBox();
			this.MyStatus = new System.Windows.Forms.StatusBar();
			this.mainMenu1 = new System.Windows.Forms.MainMenu();
			this.menuItem1 = new System.Windows.Forms.MenuItem();
			this.menuItem3 = new System.Windows.Forms.MenuItem();
			this.menuItem2 = new System.Windows.Forms.MenuItem();
			this.menuItem4 = new System.Windows.Forms.MenuItem();
			this.menuItem5 = new System.Windows.Forms.MenuItem();
			this.menuItem6 = new System.Windows.Forms.MenuItem();
			this.menuItem7 = new System.Windows.Forms.MenuItem();
			this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
			this.saveFileDialog1 = new System.Windows.Forms.SaveFileDialog();
			this.menuItem8 = new System.Windows.Forms.MenuItem();
			this.menuItem9 = new System.Windows.Forms.MenuItem();
			this.menuItem10 = new System.Windows.Forms.MenuItem();
			this.menuItem11 = new System.Windows.Forms.MenuItem();
			this.MyPrintDC = new System.Drawing.Printing.PrintDocument();
			this.SuspendLayout();
			// 
			// MyRTBox
			// 
			this.MyRTBox.Dock = System.Windows.Forms.DockStyle.Fill;
			this.MyRTBox.Name = "MyRTBox";
			this.MyRTBox.Size = new System.Drawing.Size(292, 273);
			this.MyRTBox.TabIndex = 0;
			this.MyRTBox.Text = "";
			// 
			// MyStatus
			// 
			this.MyStatus.Location = new System.Drawing.Point(0, 251);
			this.MyStatus.Name = "MyStatus";
			this.MyStatus.Size = new System.Drawing.Size(292, 22);
			this.MyStatus.TabIndex = 1;
			this.MyStatus.Text = "新建文件";
			// 
			// mainMenu1
			// 
			this.mainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.menuItem1,
																					  this.menuItem7});
			// 
			// menuItem1
			// 
			this.menuItem1.Index = 0;
			this.menuItem1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.menuItem3,
																					  this.menuItem2,
																					  this.menuItem4,
																					  this.menuItem5,
																					  this.menuItem8,
																					  this.menuItem9,
																					  this.menuItem10,
																					  this.menuItem11,
																					  this.menuItem6});
			this.menuItem1.Text = "文件（&F）";
			// 
			// menuItem3
			// 
			this.menuItem3.Index = 0;
			this.menuItem3.Text = "新建（&N）";
			this.menuItem3.Click += new System.EventHandler(this.menuItem3_Click);
			// 
			// menuItem2
			// 
			this.menuItem2.Index = 1;
			this.menuItem2.Text = "打开（&O）";
			this.menuItem2.Click += new System.EventHandler(this.menuItem2_Click);
			// 
			// menuItem4
			// 
			this.menuItem4.Index = 2;
			this.menuItem4.Text = "保存（&S）";
			this.menuItem4.Click += new System.EventHandler(this.menuItem4_Click);
			// 
			// menuItem5
			// 
			this.menuItem5.Index = 3;
			this.menuItem5.Text = "-";
			// 
			// menuItem6
			// 
			this.menuItem6.Index = 8;
			this.menuItem6.Text = "退出（&X）";
			this.menuItem6.Click += new System.EventHandler(this.menuItem6_Click);
			// 
			// menuItem7
			// 
			this.menuItem7.Index = 1;
			this.menuItem7.Text = "关于（&A）";
			// 
			// openFileDialog1
			// 
			this.openFileDialog1.Filter = "Text Files(*.txt)|*.txt|Rich Text Format Files(*.rtf)|*.rtf|All Files(*.*)|*.*";
			// 
			// saveFileDialog1
			// 
			this.saveFileDialog1.FileName = "doc1";
			this.saveFileDialog1.Filter = "Text Files(*.txt)|*.txt|Rich Text Format Files(*.rtf)|*.rtf|All Files(*.*)|*.*";
			// 
			// menuItem8
			// 
			this.menuItem8.Index = 4;
			this.menuItem8.Text = "页面设置（&U）";
			this.menuItem8.Click += new System.EventHandler(this.menuItem8_Click);
			// 
			// menuItem9
			// 
			this.menuItem9.Index = 5;
			this.menuItem9.Text = "打印预览（&V）";
			this.menuItem9.Click += new System.EventHandler(this.menuItem9_Click);
			// 
			// menuItem10
			// 
			this.menuItem10.Index = 6;
			this.menuItem10.Text = "打印（&P）";
			this.menuItem10.Click += new System.EventHandler(this.menuItem10_Click);
			// 
			// menuItem11
			// 
			this.menuItem11.Index = 7;
			this.menuItem11.Text = "-";
			// 
			// MyPrintDC
			// 
			this.MyPrintDC.PrintPage += new System.Drawing.Printing.PrintPageEventHandler(this.MyPrintDC_PrintPage);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(292, 273);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.MyStatus,
																		  this.MyRTBox});
			this.Menu = this.mainMenu1;
			this.Name = "Form1";
			this.Text = "PrintEditorApp";
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void CheckSave()
		{
			if (MyRTBox.Text != "")
			{
				if (MessageBox.Show ("是否保存当前文件？","确认" ,MessageBoxButtons.OKCancel  ) == DialogResult.OK )
				{
					MySaveFile();
				}
			}
		}

		private void MyNewFile()
		{
			CheckSave(); //检查是否保存当前文件
			MyRTBox.Clear ();
			MyStatus.Text = "新建文件";
		}

		private void MySaveFile()
		{
			MyStatus.Text = "保存文件";
			if (saveFileDialog1.ShowDialog () == DialogResult.OK )
			{
				MyRTBox.SaveFile (saveFileDialog1.FileName );
			}
		}
		private void MyOpenFile()
		{
			CheckSave(); //检查是否保存当前文件
			
			if (openFileDialog1.ShowDialog () == DialogResult.OK )
			{
				MyRTBox.LoadFile (openFileDialog1.FileName ,RichTextBoxStreamType.PlainText );
				MyStatus.Text = "打开文件";
			}	
		}
		private void MyExit()
		{
			CheckSave(); //检查是否保存当前文件

			Application.Exit ();
		}

		private void menuItem3_Click(object sender, System.EventArgs e)
		{
			MyNewFile(); //新建文件
		}

		private void menuItem2_Click(object sender, System.EventArgs e)
		{			
			MyOpenFile();//打开文件	
		}

		private void menuItem4_Click(object sender, System.EventArgs e)
		{
			MySaveFile();//保存文件
		}

		private void menuItem6_Click(object sender, System.EventArgs e)
		{
			MyExit();//退出程序
		}

		private void menuItem10_Click(object sender, System.EventArgs e)
		{
			PrintDialog MyPrintDg = new PrintDialog (); //创建打印对话框
			MyPrintDg.Document = MyPrintDC ;
			MySReader = new StringReader (MyRTBox.Text );
			if (MyPrintDg.ShowDialog () == DialogResult.OK )
			{
				try 
				{
					MyPrintDC.Print ();
				}
				catch 
				{   //停止打印
					MyPrintDC.PrintController.OnEndPrint (MyPrintDC, new System.Drawing.Printing.PrintEventArgs() ); 
				}
			}
		}

		private void MyPrintDC_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
		{
			Graphics MyGraphics = e.Graphics ;
			Font MyPrintFont = MyRTBox.Font ;
			//每一页的行数
			float iLinePerPage = e.MarginBounds.Height  / MyPrintFont.GetHeight (MyGraphics);
			int iLineNumber = 0; //打印时的行计数器
			float fYPosition = 0;//打印时的纵坐标
			float fMarginLeft = e.MarginBounds .Left ;
			float fMarginTop = e.MarginBounds .Top;
			string strLine = ""; //每一行要打印的文本
			while ((iLineNumber < iLinePerPage) && 
				((strLine = MySReader.ReadLine ())!=null))
			{
				fYPosition = fMarginTop + iLineNumber * MyPrintFont.GetHeight(MyGraphics);
				MyGraphics.DrawString (strLine, MyPrintFont, new SolidBrush (Color.Black ),fMarginLeft ,fYPosition,new StringFormat ());
				iLineNumber ++;
			}
			if (strLine!= null)
			{
				e.HasMorePages = true;//没有打印完，出发下一次PrintPage事件
			}
			else {
				e.HasMorePages = false;
			}
		}

		private void menuItem8_Click(object sender, System.EventArgs e)
		{
			PageSetupDialog MyPageSetupDg = new PageSetupDialog ();//页面设置对话框
			MyPageSetupDg.Document = MyPrintDC;
			try 
			{
				MyPageSetupDg.ShowDialog ();
			}
			catch {	}
		}

		private void menuItem9_Click(object sender, System.EventArgs e)
		{
			PrintPreviewDialog MyPrintPreviewDg = new PrintPreviewDialog ();
			MyPrintPreviewDg.Document = MyPrintDC;
			
            try 
			{
				MyPrintPreviewDg.ShowDialog ();
			}
			catch 
			{
				MyPrintDC.PrintController .OnEndPrint (MyPrintDC, new System.Drawing .Printing .PrintEventArgs() );
			}
		}
	}
}