VB.NET match whole word and replace

I'm trying 开发者_StackOverflow社区to replace a string with another but the problem is that the string is matching some other string partially.

For e.g. -

Dim x as String = "I am Soham"
x = x.Replace("am","xx")

After this replace I would only like the word am to replaced with xx but because my name also contains am its also getting replaced.

The value of x is I xx Sohxx. How can I stop this. Please help.

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Use Regex.Replace and use the regular expression \bam\b. In a regular expression \b means "word boundary".

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You can write up like as follows also.

X = X.Replace(" am"," xx")