如何讓文本適合printPreviewDialog文檔C＃

Question

我想要得到一個長的描述，以適應我的printPreviewDialog文檔。但是，當我在文本框中鍵入描述並嘗試打印時，文本不會保留在文檔中。 Text not staying on document的，是造成這一問題的代碼行是最後一個 e.Graphics.DrawString("Description:" + description4Repair.Text, new Font("Arial", 15, FontStyle.Regular), Brushes.Black, new Point(50, 493));

所有代碼：

 e.Graphics.DrawString("DEVICE INFORMATION:", new Font("Arial", 14, FontStyle.Regular), Brushes.Black, new Point(286, 373)); 


     e.Graphics.DrawString("Device Type:" + devices.Text, new Font("Arial", 15, FontStyle.Regular), Brushes.Black, new Point(50, 403)); 

     if (devices.Visible == true & devices.Text == "Console") 
     { 
      e.Graphics.DrawString("Type of Console:" + consoleTextBox.Text, new Font("Arial", 15, FontStyle.Regular), Brushes.Black, new Point(50, 433)); 
     } 

     if (comboBox3.Visible == true) //iphone selection box is visible then show selected model on print document 
     { 
      e.Graphics.DrawString("Type of Phone:" + comboBox3.Text, new Font("Arial", 15, FontStyle.Regular), Brushes.Black, new Point(50, 433)); 


     e.Graphics.DrawString("Service Type:" + serviceDesc.Text, new Font("Arial", 15, FontStyle.Regular), Brushes.Black, new Point(50, 463)); 

     e.Graphics.DrawString("Description:" + description4Repair.Text, new Font("Arial", 15, FontStyle.Regular), Brushes.Black, new Point(50, 493)); 

```

Answer 1

您需要使用的DrawString過載，使您可以佈局給定矩形內的文本。要確定矩形的大小，請使用MeasureString。跟蹤額外變量的垂直位置。您的代碼應該是這樣的：

private int DrawWrapped(string text, Font f, Point location, Size maxSize, Graphics g) 
{ 
    // how much space is needed 
    var neededRect = g.MeasureString(text, f, maxSize.Width - location.X); 
    var rect = new Rectangle(location, neededRect.ToSize()); 
    g.DrawString(text, f, Brushes.Black, rect, StringFormat.GenericDefault); 
    return (int) Math.Ceiling(neededRect.Height); 
} 

private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e) 
{ 
    int y = 373; // keep track of where we are on the page vertically 
    using (var arial14 = new Font("Arial", 14, FontStyle.Regular)) 
    { 
     // add the used height to where we are 
     y += DrawWrapped("DEVICE INFORMATION:", arial14, new Point(286, y), e.PageBounds.Size, e.Graphics); 
     y += (2 * arial14.Height); // add some white space 
    } 
    using (var arial15 = new Font("Arial", 15, FontStyle.Regular)) 
    { 
     y += DrawWrapped("Device Type:" + devices.Text, arial15, new Point(50, y), e.PageBounds.Size, e.Graphics); 

     if (devices.Visible == true && devices.Text == "Console") // better use && me thinks 
     { 
      y += DrawWrapped("Type of Console:" + consoleTextBox.Text, arial15, new Point(50, y), e.PageBounds.Size, e.Graphics); 
     } 
     if (comboBox3.Visible == true) //iphone selection box is visible then show selected model on print document 
     { 
      y += DrawWrapped("Type of Phone:" + comboBox3.Text, arial15, new Point(50, y), e.PageBounds.Size, e.Graphics); 
      y += DrawWrapped("Service Type:" + serviceDesc.Text, arial15, new Point(50, y), e.PageBounds.Size, e.Graphics); 
      y += DrawWrapped("Description:" + description4Repair.Text, arial15, new Point(50, y), e.PageBounds.Size, e.Graphics); 
     } 
    } 
} 

這是結果將是什麼樣子：