Wednesday, May 5, 2010

How do I truncate a .NET string?

Programmer Question


I apologize for such a question that likely has a trivial solution, but I strangely could not find a concise API for this problem.



Essentially, I would like to truncate a string such that it its length is not longer than a given value. I am writing to a database table and want to ensure that the values I write meet the constraint of the column's datatype.



For instance, it would be nice if I could write the following:



string NormalizeLength(string value, int maxLength)
{
return value.Substring(0, maxLength);
}


Unfortunately, this raises an exception because maxLength exceeds the string boundaries. Of course, I could write a function like the following, but I was hoping that something like this already exists.



string NormalizeLength(string value, int maxLength)
{
return value.Length <= maxLength ? value : value.Substring(0, maxLength);
}


Where is the elusive API that performs this task? Is there one?





Find the answer here

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