上記のエラーが発生します。このエラーに関する他の同様の投稿を見ましたが、問題がどこにあるのかわかりません。クラスの型を static に変更したところ、エラーが発生しなくなりました。これは、メイン フォーム クラスのコード全体です。
クラスを編集しました。これは現在のように見え、エラーは次のように変更されました。この型の別の部分宣言が存在します。
namespace PhoneFind
{
public partial class frmMain : Form
{
// the path to the temporary file to store the webresponse
String path = "c:\\Temp\\webresponse.txt";
public frmMain()
{
InitializeComponent();
comboSelectSearchEngine.SelectedIndex = 0;
ofdPhones.Filter = "txt files (*.txt)|*.txt";
listbxMessages.Items.Clear();
addItemToListBox(listbxMessages, "Welcome to ActionBase Phone Find!");
addItemToListBox(listbxMessages, "Select the file containing the numbers.");
radioNumbers.Checked = true;
}
private void frmMain_Load(object sender, EventArgs e)
{
}
private void btnLoadFile_Click(object sender, EventArgs e)
{
if (ofdPhones.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
txtFile.Text = ofdPhones.FileName;
// Read the file line by line and add the numbers to the numbers listbox.
listbxNumbers.Items.Clear();
String line;
int numbersCounter = 0;
System.IO.StreamReader file = new System.IO.StreamReader(ofdPhones.FileName);
while ((line = file.ReadLine()) != null)
{
listbxNumbers.Items.Add(line.Trim());
numbersCounter++;
}
addItemToListBox(listbxMessages, ofdPhones.FileName + " loaded.");
addItemToListBox(listbxMessages, numbersCounter + " records found in the file.");
}
}
// add item to the listbox and move scroll to the end of the listbox for the latest messages to be visibile to the viewer
private void addItemToListBox(ListBox listbox, String item)
{
listbox.Items.Add(item);
listbox.SelectedIndex = (listbox.Items.Count - 1);
}
private void radioNumbers_CheckedChanged(object sender, EventArgs e)
{
if (!radioNumbers.Checked)
{
grpbxNumbers.Text = "Names and Addresses";
}
else
{
grpbxNumbers.Text = "Numbers";
}
}
private void btnRun_Click(object sender, EventArgs e)
{
if (listbxNumbers.Items.Count == 0)
{
MessageBox.Show("No records have been loaded." + "\n" + "Use the browse button to load records.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else if (!CheckForInternetConnection())
{
MessageBox.Show("No internet connection.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else
{
String response;
switch (comboSelectSearchEngine.SelectedIndex)
{
case 0: // Hitta.se
foreach (String item in listbxNumbers.Items)
{
WebRequestObj request = new WebRequestObj(item, "hitta");
response = request.sendRequest();
if (response.Equals("Error"))
{
addItemToListBox(listbxMessages, "Error sending '" + item + "' to the server.");
}
else
{
//create a temporary file to work on the response
StreamWriter sw;
if (!File.Exists(path)) {
sw = File.CreateText(path);
}
try
{
File.WriteAllText(path, String.Empty); // clear the content of the file
sw = File.AppendText(path);
sw.WriteLine(response);
sw.Flush();
sw.Close();
String s = findResultType(path);
MessageBox.Show(s);
}
catch (IOException ioe)
{
MessageBox.Show(ioe.Message,"Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
break;
}
}
}
public bool CheckForInternetConnection()
{
try
{
using (var client = new System.Net.WebClient())
using (var stream = client.OpenRead("http://www.google.com"))
{
return true;
}
}
catch
{
return false;
}
}
/*
* findResultType
* gets the web response and finds out if the matching result of the search termis one of the following:
* 1. one person (oneperson)
* 2. one company (onecompany)
* 3. more than one person, no company (manypersonnocompany)
* 4. no person, more than one company (nopersonmanycompany)
* 5. more than one person, more than one company (manypersonmanycompany)
* 6. no person, no company (nopersonnocompany)
*/
public String findResultType(String reponsepath)
{
HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
doc.Load(reponsepath);
List<String> itemList = new List<String>();
IEnumerable<String> v = null;
var item = doc.DocumentNode.SelectNodes("//body[@id='person']");
if (item != null)
{
v = item.Select(p => p.InnerText);
itemList = v.ToList();
if (itemList.Count == 1)
return "oneperson";
}
else
{
item = doc.DocumentNode.SelectNodes("//body[@id='company']");
if (item != null)
{
v = item.Select(p => p.InnerText);
itemList = v.ToList();
if (itemList.Count == 1)
return "onecompany";
}
}
//for (int i = 0; i < itemList.Count; i++)
//{
// MessageBox.Show(itemList[i]);
// //console.writeline(itemlist[i]);
//}
//console.writeline(itemlist.count + " results found.");
return "";
}
}
}