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Categories / C# Tutorial / GUI Windows Forms

 

The print preview application

using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data; public class Form1 : System.Windows.Forms.Form {     private System.Windows.Forms.Button button1;     private System.ComponentModel.Container components = null;     private System.Drawing.Printing.PrintDocument ThePrintDocument = null;     private System.IO.StringReader myStringReader = null;     public Form1() {         ThePrintDocument = new System.Drawing.Printing.PrintDocument();         this.button1 = new System.Windows.Forms.Button();         this.button2 = new System.Windows.Forms.Button();         this.SuspendLayout();         this.button1.Location = new System.Drawing.Point(112, 352);         this.button1.Text = "&Preview";         this.button1.Click += new System.EventHandler(this.button1_Click);         this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);         this.ClientSize = new System.Drawing.Size(512, 397);         this.Controls.AddRange(new System.Windows.Forms.Control[] { this.button1 });         this.ResumeLayout(false);     }     [STAThread]     static void Main() {         Application.Run(new Form1());     }     protected void PrintPage(object sender,         System.Drawing.Printing.PrintPageEventArgs ev) {         float linesPerPage = 0;         float yPosition = 0;         int count = 0;         float leftMargin = ev.MarginBounds.Left;         float topMargin = ev.MarginBounds.Top;         string line = null;         Font printFont = this.Font;         SolidBrush myBrush = new SolidBrush(Color.Black);         linesPerPage = ev.MarginBounds.Height / printFont.GetHeight(ev.Graphics);         while (count < linesPerPage && ((line = myStringReader.ReadLine()) != null)) {             yPosition = topMargin + (count * printFont.GetHeight(ev.Graphics));             ev.Graphics.DrawString(line, printFont, myBrush, leftMargin, yPosition, new StringFormat());             count++;         }         if (line != null)             ev.HasMorePages = true;         else             ev.HasMorePages = false;         myBrush.Dispose();     }     private void button1_Click(object sender, System.EventArgs e) {         ThePrintDocument.PrintPage += new System.Drawing.Printing.PrintPageEventHandler(PrintPage);         string strText = "STRING";         myStringReader = new System.IO.StringReader(strText);         PrintPreviewDialog printPreviewDialog1 = new PrintPreviewDialog();         printPreviewDialog1.Document = this.ThePrintDocument;         printPreviewDialog1.ShowDialog();     } }