Determine if a string contains a substring at a specific position

Question

I need to check if a certain filename contains the user speficied substring, but I can't seem to get the syntax correct (I'm new to C#). I am expected to use the asterisks, but I'm unsure how it should be formatted (see my code below).

if (fileInfo[i].Name == ("{0} * . * ", partialName) || fileInfo[i].Name == (" * {0}. * ", partialName))

Felipe Oriani · Accepted Answer · 2014-01-10 17:55:36Z

3

Try using the Contains method from string, for sample:

if (fileInfo[i].Name.Contains(partialName)) 
{
   // your code
}

If you want to remove the extension from name, try using the Path static class and GetFileNameWithoutExtension method, for sample:

string fileName = System.IO.Path.GetFileNameWithoutExtension(fileInfo[i].Name);

if (fileName.Contains(partialName)) 
{
   // your code
}

Now, if you want to ignore case sensitive strings, try using the IndexOf method, for sample:

if (fileInfo[i].Name.IndexOf(partialName, StringComparison.OrdinalIgnoreCase) >= 0)
{
   // your code
}

or apply the Path.GetFileNameWithoutExtension to use on IndexOf.

answered Jan 10, 2014 at 17:55

Felipe Oriani

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1 Comment

user3182884 Over a year ago

I have to use * 's, plus, using .Contains also checks the file extension, as that is contained in the string.

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