I try to replace the file name which contains "TEMPDOCUMENTLIBRARY" with "SHAREDDOCS" in the docs (Typed Dataset). But somehow it does not replace it at all. What's wrong ?
for (int index = 0; index < docs.Document.Rows.Count; index++)
{
if (docs.Document[index].FileName.Contains("TEMPDOCUMENTLIBRARY"))
{
docs.Document[index].BeginEdit();
docs.Document[index].FileName.Replace("TEMPDOCUMENTLIBRARY", "SHAREDDOCS");
docs.Document[index].EndEdit();
}
}
Strings are immutable (meaning that the value of a given string never changes). Functions like Substring and Replace return new strings that represent the original string with the desired operations performed.
In order to achieve what you want, you need this:
docs.Document[index].FileName =
docs.Document[index].FileName.Replace("TEMPDOCUMENTLIBRARY", "SHAREDDOCS");
String.Replace or String.Substring? The function returns the result you want which is basically all anyone using the method should need to know, right?
String.Replace does not replace in place. Try:
docs.Document[index].FileName = docs.Document[index].FileName.Replace("TEMPDOCUMENTLIBRARY", "SHAREDDOCS");
Notice in the documentation (linked above) that it returns the result of the replace.