ByteScout Premium Suite – C# – Change PDF Selection Options and use CustomPaint with PDF Viewer SDK

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ByteScout Premium Suite – C# – Change PDF Selection Options and use CustomPaint with PDF Viewer SDK

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ByteScout-Premium-Suite-C-sharp-Change-PDF-Selection-Options-and-use-CustomPaint-with-PDF-Viewer-SDK.pdf

How to change PDF selection options and use custompaint with PDF viewer SDK in C# and ByteScout Premium Suite

How to write a robust code in C# to change PDF selection options and use custompaint with PDF viewer SDK with this step-by-step tutorial

This sample source code below will display you how to change PDF selection options and use custompaint with PDF viewer SDK in C#. What is ByteScout Premium Suite? It is the bundle that includes twelve SDK products from ByteScout including tools and components for PDF, barcodes, spreadsheets, screen video recording. It can help you to change PDF selection options and use custompaint with PDF viewer SDK in your C# application.

The following code snippet for ByteScout Premium Suite works best when you need to quickly change PDF selection options and use custompaint with PDF viewer SDK in your C# application. Simply copy and paste in your C# project or application you and then run your app! Use of ByteScout Premium Suite in C# is also described in the documentation included along with the product.

ByteScout provides the free trial version of ByteScout Premium Suite along with the documentation and source code samples.

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Form1.Designer.cs

      using Bytescout.PDFViewer;

namespace Example
{
	partial class Form1
	{
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.IContainer components = null;

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
		protected override void Dispose(bool disposing)
		{
			if (disposing && (components != null))
			{
				components.Dispose();
			}
			base.Dispose(disposing);
		}

		#region Windows Form Designer generated code

		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.pdfViewerControl1 = new Bytescout.PDFViewer.PDFViewerControl();
			this.toolStrip1 = new System.Windows.Forms.ToolStrip();
			this.tsbOpen = new System.Windows.Forms.ToolStripButton();
			this.cbLockSelection = new System.Windows.Forms.CheckBox();
			this.cbAllowResizeSelection = new System.Windows.Forms.CheckBox();
			this.cbMultiSelectMode = new System.Windows.Forms.CheckBox();
			this.toolStrip1.SuspendLayout();
			this.SuspendLayout();
			// 
			// pdfViewerControl1
			// 
			this.pdfViewerControl1.AllowResizeSelectionRectangles = true;
			this.pdfViewerControl1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
            | System.Windows.Forms.AnchorStyles.Left) 
            | System.Windows.Forms.AnchorStyles.Right)));
			this.pdfViewerControl1.BackColor = System.Drawing.SystemColors.ButtonShadow;
			this.pdfViewerControl1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
			this.pdfViewerControl1.Location = new System.Drawing.Point(12, 97);
			this.pdfViewerControl1.MouseMode = Bytescout.PDFViewer.MouseMode.Selection;
			this.pdfViewerControl1.MultiSelectMode = true;
			this.pdfViewerControl1.Name = "pdfViewerControl1";
			this.pdfViewerControl1.RegistrationKey = null;
			this.pdfViewerControl1.RegistrationName = null;
			this.pdfViewerControl1.Size = new System.Drawing.Size(1153, 568);
			this.pdfViewerControl1.TabIndex = 0;
			this.pdfViewerControl1.SelectionChanged += new SelectionChangedEventHandler(this.pdfViewerControl1_SelectionChanged);
			this.pdfViewerControl1.CustomPaint += new System.Windows.Forms.PaintEventHandler(this.pdfViewerControl1_CustomPaint);
			// 
			// toolStrip1
			// 
			this.toolStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
            this.tsbOpen});
			this.toolStrip1.Location = new System.Drawing.Point(0, 0);
			this.toolStrip1.Name = "toolStrip1";
			this.toolStrip1.Size = new System.Drawing.Size(1177, 25);
			this.toolStrip1.TabIndex = 1;
			this.toolStrip1.Text = "toolStrip1";
			// 
			// tsbOpen
			// 
			this.tsbOpen.Image = global::Example.Properties.Resources.folder_page;
			this.tsbOpen.ImageTransparentColor = System.Drawing.Color.Magenta;
			this.tsbOpen.Name = "tsbOpen";
			this.tsbOpen.Size = new System.Drawing.Size(80, 22);
			this.tsbOpen.Text = "&Open PDF";
			this.tsbOpen.Click += new System.EventHandler(this.tsbOpen_Click);
			// 
			// cbLockSelection
			// 
			this.cbLockSelection.AutoSize = true;
			this.cbLockSelection.Location = new System.Drawing.Point(12, 74);
			this.cbLockSelection.Name = "cbLockSelection";
			this.cbLockSelection.Size = new System.Drawing.Size(95, 17);
			this.cbLockSelection.TabIndex = 2;
			this.cbLockSelection.Text = "Lock selection";
			this.cbLockSelection.UseVisualStyleBackColor = true;
			this.cbLockSelection.CheckedChanged += new System.EventHandler(this.cbLockSelection_CheckedChanged);
			// 
			// cbAllowResizeSelection
			// 
			this.cbAllowResizeSelection.AutoSize = true;
			this.cbAllowResizeSelection.Checked = true;
			this.cbAllowResizeSelection.CheckState = System.Windows.Forms.CheckState.Checked;
			this.cbAllowResizeSelection.Location = new System.Drawing.Point(12, 51);
			this.cbAllowResizeSelection.Name = "cbAllowResizeSelection";
			this.cbAllowResizeSelection.Size = new System.Drawing.Size(178, 17);
			this.cbAllowResizeSelection.TabIndex = 3;
			this.cbAllowResizeSelection.Text = "Allow resize selection rectangles";
			this.cbAllowResizeSelection.UseVisualStyleBackColor = true;
			this.cbAllowResizeSelection.CheckedChanged += new System.EventHandler(this.cbAllowResizeSelection_CheckedChanged);
			// 
			// cbMultiSelectMode
			// 
			this.cbMultiSelectMode.AutoSize = true;
			this.cbMultiSelectMode.Checked = true;
			this.cbMultiSelectMode.CheckState = System.Windows.Forms.CheckState.Checked;
			this.cbMultiSelectMode.Location = new System.Drawing.Point(12, 28);
			this.cbMultiSelectMode.Name = "cbMultiSelectMode";
			this.cbMultiSelectMode.Size = new System.Drawing.Size(108, 17);
			this.cbMultiSelectMode.TabIndex = 4;
			this.cbMultiSelectMode.Text = "Multi-select mode";
			this.cbMultiSelectMode.UseVisualStyleBackColor = true;
			this.cbMultiSelectMode.CheckedChanged += new System.EventHandler(this.cbMultiSelectMode_CheckedChanged);
			// 
			// Form1
			// 
			this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
			this.ClientSize = new System.Drawing.Size(1177, 677);
			this.Controls.Add(this.cbMultiSelectMode);
			this.Controls.Add(this.cbAllowResizeSelection);
			this.Controls.Add(this.cbLockSelection);
			this.Controls.Add(this.pdfViewerControl1);
			this.Controls.Add(this.toolStrip1);
			this.Name = "Form1";
			this.Text = "Form1";
			this.toolStrip1.ResumeLayout(false);
			this.toolStrip1.PerformLayout();
			this.ResumeLayout(false);
			this.PerformLayout();

		}

		#endregion

		private Bytescout.PDFViewer.PDFViewerControl pdfViewerControl1;
		private System.Windows.Forms.ToolStrip toolStrip1;
		private System.Windows.Forms.ToolStripButton tsbOpen;
		private System.Windows.Forms.CheckBox cbLockSelection;
		private System.Windows.Forms.CheckBox cbAllowResizeSelection;
		private System.Windows.Forms.CheckBox cbMultiSelectMode;
	}
}

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Form1.cs

      using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
using Bytescout.PDFViewer;

namespace Example
{
	public partial class Form1 : Form
	{
		public Form1()
		{
			InitializeComponent();
		}

		protected override void OnLoad(EventArgs e)
		{
			pdfViewerControl1.InputFile = "sample.pdf";

			base.OnLoad(e);
		}

		private void tsbOpen_Click(object sender, EventArgs e)
		{
			using (OpenFileDialog openFileDialog = new OpenFileDialog())
			{
				openFileDialog.Title = @"Open PDF Document";
				openFileDialog.Filter = @"PDF Files (*.pdf)|*.pdf|All Files|*.*";

				if (openFileDialog.ShowDialog() == DialogResult.OK)
				{
					this.Text = openFileDialog.FileName;

					Cursor = Cursors.WaitCursor;

					try
					{
						pdfViewerControl1.InputFile = openFileDialog.FileName;
					}
					catch (Exception exception)
					{
						MessageBox.Show(exception.Message);
					}
					finally
					{
						Cursor = Cursors.Default;
					}
				}
			}
		}

		private void cbMultiSelectMode_CheckedChanged(object sender, EventArgs e)
		{
			pdfViewerControl1.MultiSelectMode = cbMultiSelectMode.Checked;
		}

		private void cbAllowResizeSelection_CheckedChanged(object sender, EventArgs e)
		{
			pdfViewerControl1.AllowResizeSelectionRectangles = cbAllowResizeSelection.Checked;
		}

		private void cbLockSelection_CheckedChanged(object sender, EventArgs e)
		{
			pdfViewerControl1.LockSelection = cbLockSelection.Checked;
		}

		List<String> _labels = new List<string>();

		private void pdfViewerControl1_SelectionChanged(object sender, SelectionChange selectionChange, int selectionIndex)
		{
			if (pdfViewerControl1.Selection.Length > _labels.Count)
			{
				for (int i = _labels.Count; i < pdfViewerControl1.Selection.Length; i++)
				{
					_labels.Add(new Random().Next().ToString());
				}
			}
		}

		private void pdfViewerControl1_CustomPaint(object sender, PaintEventArgs e)
		{
			// Paint labels
			for (int i = 0; i < pdfViewerControl1.Selection.Length; i++)
			{
				Rectangle r = Rectangle.Round(pdfViewerControl1.Selection[i]);
				r = pdfViewerControl1.TranslateRectangleToViewport(r);
				
				Size textSize = TextRenderer.MeasureText(_labels[i], Font);
				Rectangle textRectangle = new Rectangle(r.Left, r.Top - textSize.Height - 6, textSize.Width + 2, textSize.Height + 2);

				e.Graphics.FillRectangle(Brushes.DarkBlue, textRectangle);
				TextRenderer.DrawText(e.Graphics, _labels[i], Font, textRectangle, Color.White, TextFormatFlags.HorizontalCenter | TextFormatFlags.VerticalCenter);
			}
		}
	}
}

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Program.cs

      using System;
using System.Collections.Generic;
using System.Windows.Forms;

namespace Example
{
	static class Program
	{
		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main()
		{
			Application.EnableVisualStyles();
			Application.SetCompatibleTextRenderingDefault(false);
			Application.Run(new Form1());
		}
	}
}