Hi guys,
How to load any other document formats other than .txt , and .rtf (which naturally supported by LoadFile() function), like .java, .c# , and .doc into richTextBox object?????

any help appreciated. Thanks in advance.

Well you can use this on button click event:

C# Syntax (Toggle Plain Text)

OpenFileDialog f = new OpenFileDialog();
            f.Title = "open file as..";
            f.Filter = "Doc Files|*.doc|Java Files|*.java|C# Files|*.cs|All Files|*.*"; // and in a similar way you can load any format here.......
            DialogResult dr = f.ShowDialog();
            if (dr == DialogResult.OK)
            {
                s1 = f.FileName;
                richTextBox1.LoadFile(s1);
                open=true;
            }

OpenFileDialog f = new OpenFileDialog(); f.Title = "open file as.."; f.Filter = "Doc Files|*.doc|Java Files|*.java|C# Files|*.cs|All Files|*.*"; // and in a similar way you can load any format here....... DialogResult dr = f.ShowDialog(); if (dr == DialogResult.OK) { s1 = f.FileName; richTextBox1.LoadFile(s1); open=true; }

By the help of this you can load any other doument format files as well...............

you can read the contents of any file to a text box with the string reader class

C# Syntax (Toggle Plain Text)

          using (System.IO.StreamReader sr = new System.IO.StreamReader("TestFile.txt"))
            {
                RichTextBox1.Text =  sr.ReadToEnd();
            }

using (System.IO.StreamReader sr = new System.IO.StreamReader("TestFile.txt")) { RichTextBox1.Text = sr.ReadToEnd(); }

but .doc files will not load as plain text because they are a special format created by Microsoft word. But if you have Microsoft word installed on the computer you are using your C# app on you can load up the Microsoft Word Object Library by adding it into the reference and create an object for reading .doc files.

but the streamreader will read most text formats.