在尝试了几种错误检查方法后,我得出了结论,我需要帮助解决该问题。
我如何不捕获此“索引超出范围”错误。为了以后的良好做法,我该怎么做才能避免此问题?
public void loadFromFile()
{
OpenFileDialog oFile = new OpenFileDialog();
oFile.Title = "Open text file";
oFile.Filter = "Text Files (*.txt)|*.txt|All Files (*.*)|*.*";
oFile.FilterIndex = 1;
oFile.InitialDirectory = Application.StartupPath;
oFile.AddExtension = true;
oFile.CheckFileExists = true;
oFile.CheckPathExists = true;
// Open and clean Duplicates
String[] lines;
List<string> temp = new List<string>();
List<string> newlist = new List<string>();
if(oFile.ShowDialog() == DialogResult.OK)
{
// Dummy file has 6 lines of text. Filename:DuplicatFile.txt
// 3 duplicate lines and 3 not.
lines = File.ReadAllLines(oFile.FileName, System.Text.Encoding.UTF8);
// Copy array to temporary array
for (int index=0; index < lines.Length; index++)
{
// System.ArgumentOutOfRangeException was unhandled
// Index was out of range. Must be non-negative and less than the size of the collection.
if (lines[index].Length >= 0)
{
temp[index] = lines[index];
}
}
// Check for duplicates. If duplicate ignore if non-duplicate add to list.
foreach (string line in temp)
{
if (!newlist.Contains(line))
{
newlist.Add(line);
}
}
// Clear listbox and add new list to listbox.
lstBox.Items.Clear();
foreach (string strNewLine in newlist)
{
lstBox.Items.Add(strNewLine);
}
}
}
最佳答案
List<string> temp = new List<string>();
...
temp[index] = lines[index];
temp
以0大小开始。任何索引超出范围。您可以使用
temp.Add
来解决此问题,以使列表动态增长:temp.Add(lines[index]);