Regular expressions give a short, flexible, and snappy way of recognizing strings of text, such as characters, words, or patterns. There is no specific feature available in VSTO 3.0 for regular expressions. VSTO allows you to use most of the .NET framework's namespaces and classes. In VSTO, you can use regular expression with the help of .NET programming.
The following is an example for email validation applied to an Excel cell using regular expression techniques for the Excel 2007 document-level solution.
Open Visual Studio 2008 and create a new solution with all the supporting files for the development of the Excel solution. Write the following code in the Sheet1.cs
file:
private void Sheet1_Startup(object sender, System.EventArgs e) { // Setting the value in the cell Globals.Sheet1.Range["A1", missing].Value2 = "[email protected]"; // Loading the cell value to the string string strCellData = Globals.Sheet1.Range["A1", missing].Value2.ToString(); // Validating the RegEx...