ByteScout PDF Viewer SDK – C# – Change PDF Selection Options and Use CustomPaint

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ByteScout PDF Viewer SDK – C# – Change PDF Selection Options and Use CustomPaint

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ByteScout-PDF-Viewer-SDK-C-sharp-Change-PDF-Selection-Options-and-Use-CustomPaint.pdf

How to change PDF selection options and use custompaint in C# with ByteScout PDF Viewer SDK

How to code in C# to change PDF selection options and use custompaint with this step-by-step tutorial

The coding tutorials are designed to help you test the features without need to write your own code. ByteScout PDF Viewer SDK is the visual component that you can use to quickly create your own pdf viewer application or add pdf vieweing functionality into your existing app. into your WinForms application. Includes support for selection using mouse, returns coordinates, you may add custom painting on top of pdf displayed and you can use it to change PDF selection options and use custompaint with C#.

You will save a lot of time on writing and testing code as you may just take the C# code from ByteScout PDF Viewer SDK for change PDF selection options and use custompaint below and use it in your application. Just copy and paste the code into your C# application’s code and follow the instruction. Implementing C# application typically includes multiple stages of the software development so even if the functionality works please test it with your data and the production environment.

ByteScout free trial version is available for download from our website. It includes all these programming tutorials along with 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);
			}
		}
	}
}

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout PDF Viewer SDK Home Page

Explore ByteScout PDF Viewer SDK Documentation

Explore Samples

Sign Up for ByteScout PDF Viewer SDK Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

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());
		}
	}
}