How to Open and Close Word Files using Spire.DocViewer

This article presents how to create a Windows Forms application to open and close your Word files using Spire.DocViewer component. Detailed steps would be as follows:

First of all, download Spire.DocViewer, add DocViewer Control to VS Toolbox.

Then create a Windows Forms application, design your Form1 as below.

Add 'Open from file' button to open a file from existing Word document.
Add 'Open from stream' button to load a Word file from steam.
Add 'Close' button to shut down the open file.
Drag 'DocDocumentViewer Control' into Form1, which is used to display Word document.

How to Open and Close Word Files using Spire.DocViewer

Code Snippet:

Step 1: Initialize components in Form1.

        System.IO.FileStream stream;
        public Form1()
        {
            InitializeComponent();
          
        }

Step 2: Create an OpenFileDialog to select the correct file type that we want to load, otherwise error message 'Cannot detect current file type' will occur.

private void btnOpen_Click(object sender, EventArgs e)
        {
            //open a DOC document
            OpenFileDialog dialog = new OpenFileDialog();
            dialog.Filter = "Word97-2003 files(*.doc)|*.doc|Word2007-2010 files (*.docx)|*.docx|All files (*.*)|*.*";
            dialog.Title = "Select a DOC file";
            dialog.Multiselect = false;
            dialog.InitialDirectory = System.IO.Path.GetFullPath(@"..\..\..\..\..\..\Data");

            DialogResult result = dialog.ShowDialog();

            if (result == DialogResult.OK)
            {
                try
                {
                    //Load DOC document from file.
                    this.docDocumentViewer1.LoadFromFile(dialog.FileName);
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message, "Error!", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
        }

Step 3: This button code enables users to open Word files from a stream in Xml or Microsoft Word format.

        private void btnOpenStream_Click(object sender, EventArgs e)
        {
            //open a doc document
            OpenFileDialog dialog = new OpenFileDialog();
            dialog.Filter = "Word97-2003 files(*.doc)|*.doc|Word2007-2010 files (*.docx)|*.docx|All files (*.*)|*.*";
            dialog.Title = "Select a DOC file";
            dialog.Multiselect = false;
            dialog.InitialDirectory = System.IO.Path.GetFullPath(@"..\..\..\..\..\..\Data");
            
            DialogResult result = dialog.ShowDialog();

            if (result == DialogResult.OK)
            {
                try
                {
                    string docFile = dialog.FileName;
                    stream = new System.IO.FileStream(docFile, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.Read);
                    if (stream != null)
                    {
                        //Load doc document from stream.
                        this.docDocumentViewer1.LoadFromStream(stream, Spire.Doc.FileFormat.Auto);
                    }
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message, "Error!", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
        }

Step 4: Close the open file.

        private void btnClose_Click(object sender, EventArgs e)
        {
            //Close current doc document.
            this.docDocumentViewer1.CloseDocument();
        }

After running the code, I opened a test file with this Windows application. Here is the screenshot of effect:

How to Open and Close Word Files using Spire.DocViewer

How to Open and Close Word Files using Spire.DocViewer

Code Snippet:

See Also