Question

I whant to create a function that return True if a specified string is in the xml document. The problem is that i need to search in the whole document and not a specifide element, and the xml can contain severals levels… how can i do that?

Answer 1

Treat the contents of the XML as a string, and just search the content string for the one you are looking for.

public bool FileContainsString(string filePath, string searchString)
{
    string fileContents;
    using(FileStream file = new FileStream(filePath, FileMode.Open))
    using(StreamReader reader = new StreamReader(reader))
    {
        fileContents = reader.ReadToEnd();
    }

    return fileContents.Contains(searchString);
}

This code was not tested

If you want a case-insensitive search for the string, replace

    return fileContents.Contains(searchString);

with

    return fileContents.IndexOf(searchString, StringComparison.OrdinalIgnoreCase) > -1;