How to solve unassigned 'out' parameter error?
c#
Solution
You want a `ref` parameter not an `out` parameter since you're both accepting the value and setting a new value.
int iCount = 0;
getFileCount(_dirPath, ref iCount);
private void getFileCount(string _path, ref int iCount )
{
try
{
// gives error :Use of unassigned out parameter 'iCount' RED Underline
iCount += Directory.GetFiles(_path).Length;
foreach (string _dirPath in Directory.GetDirectories(_path))
getFileCount(_dirPath, ref iCount);
}
catch { }
}
even better, don't use out parameters at all.
private int getFileCount(string _path) {
int count = Directory.GetFiles(_path).Length;
foreach (string subdir in Directory.GetDirectories(_path))
count += getFileCount(subdir);
return count;
}
and even better than that, don't create a function to do something the framework already does built in..
int count = Directory.GetFiles(path, "*", SearchOption.AllDirectories).Length
and we're not done getting better... don't waste space and cycles creating an array of files when all you need is a length. Enumerate them instead.
int count = Directory.EnumerateFiles(path, "*", SearchOption.AllDirectories).Count();
Problem
I am trying count total number of files in all the sub folder of a given path. I am using recursive function call. What could be the reason? Code: ``` int iCount =0; getFileCount(_dirPath, out iCount); private void getFileCount(string _path, out int iCount ) { try { // gives error :Use of unassigned out parameter 'iCount' RED Underline iCount += Directory.GetFiles(_path).Length; foreach (string _dirPath in Directory.GetDirectories(_path)) getFileCount(_dirPath, out iCount); } catch { } } ```