SecureString is the type that's used for passwords in SharePoint 2007. You might find its use when you are automating some "higher level" administration operation (like creating a web application for example). How do you use it is shown below:
1: private static SecureString ConvertString(string strPwd)
3: if (strPwd == null)
4: return null;
5: SecureString strSecurePassword = new SecureString();
6: foreach (char ch in strPwd)
9: return strSecurePassword;
The above method will return the type SecureString that we can pass to the calling application like below:
1: SPWebApplicationBuilder oBuilder = new SPWebApplicationBuilder(SPFarm.Local);
2: oBuilder.ApplicationPoolPassword = ConvertString("test");
SecureString finds its place when you deal with the following APIs:
PasswordTextBox.SecurePassword - this is a control.
These are the APIs that I could see uses SecureString, there might be others as well. Just came across an automation scenario lately where I had to create multiple web applications and wondered how to I set the password of type SecureString.
Invested around 20-30 minutes of time figuring it out, so thought if I post this, it might as well be helpful to others :)