C# - Convert a PDF File to Base64String

C# Convert a PDF File to Base64String
  1. Create a Windows Forms Project
  1. Name it “ConvertFileToBase64”
  1. Open Form1.cs and add a Label, two textboxes and a button


  1. Double click on the button and add the following code:


string userPath;
userPath = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile) + "\\Desktop";
        OpenFileDialog ofd = new OpenFileDialog();
        ofd.InitialDirectory = userPath;
        ofd.Filter = "html files (*.html)|*.txt|All files (*.*)|*.*";
        ofd.FilterIndex = 2;
        ofd.RestoreDirectory = true;
        ofd.ShowDialog();
        string fName = ofd.FileName;
        textBox1.Text = fName;
  
        var doc = File.ReadAllBytes(textBox1.Text);
        textBox2.Text = Convert.ToBase64String(doc);
        Clipboard.SetText(textBox2.Text);
  1. Run the project
  1. Click on the “Select File” button and pick a file of your choice
  1. The result
  1. The following part of code will copy the text to the clipboard in order to save you some time

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