[英]Why am I getting “parameter is not valid” exception on this code?
private void button8_Click(object sender, EventArgs e)
{
List<long> averages;
long res = 0;
_fi = new DirectoryInfo(subDirectoryName).GetFiles("*.bmp");
averages = new List<long>(_fi.Length);
for (int i = 0; i < _fi.Length; i++)
{
Bitmap myBitmaps = new Bitmap(_fi[i].Name);
//long[] tt = list_of_histograms[i];
long[] HistogramValues = GetHistogram(myBitmaps);
res = GetTopLumAmount(HistogramValues,1000);
averages.Add(res);
}
}
例外是在线:
Bitmap myBitmaps = new Bitmap(_fi[i].Name);
您只是将文件名传递给Bitmap
构造函数,但您实际上应该使用_fi[i].FullName
将完整路径传递给该文件_fi[i].FullName
@Lester是正确的答案(+1),但我确实想说你可以通过使用一些函数式编程结构缩短你的实现并使其更具可读性:
var averages = new DirectoryInfo(subDirectoryName)
.GetFiles("*.bmp")
.Select(t => new Bitmap(t.FullName))
.Select(GetHistogram)
.Select(v => GetTopLumAmount(v, 1000))
.ToList();
你试过.FullName
吗? 那应该包括整个目录。
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